Pragmatic 38: Watch This Time and Space

27 September, 2014


The Apple Watch promises new functionality from a smartwatch. John dissects the detail behind the power demands of wristwatches, screen types, movement types, GPSs, super-capacitors, batteries and why the Taptic engine could be a big deal.
Transcript available
Welcome to pragmatic pragmatic as a weekly discussion shall contravene the practical application of technology exploring the ruble trade-offs with great ideas are transformed products and services can change our lives nothing is as simple as it seems pragmatic is once again sponsored by life visit life expelled ally for more information about the amazing LED smart bulbs and to take advantage of a special discount exclusively for pragmatic listeners are great also sponsored by many tricks makers of helpful apps for the Mac visit many tricks all one more information about the apps Butler chemo Leach desktop curtain time sink mushroom Moon name angler and which if you visit that URL you can use the code pragmatic 25 that's pragmatic the word and to 5 numbers in the shopping cart is a 25% on any many tricks product will talk more about them during the show on your host John GG and enjoyed today for my co-host Vic Hudson Heydon Vic Gojo narrative do very well thank you are to big show today are so I won't waste any time are with the too many pleasantries I just want to tell a few things afford to get stuck in no are once again for people that are not aware are by popular request I've added separate RSS feeds were show that adjust episode only as was a follow-up only in both MP3 and AAC formats seen shoes which you are subscribed to existing fees will be unchanged and they can all be found in a nice little table attack casts/pragmatic so once again yes we are live streaming the show if you are tuning you can listen live there is an IRC chat room on but you can go to the your URL to and you can access the stream they're all you can use the embedded IRC chat box at that URL to join in we also do a Q&A segment after every show during the course of the show in the live streams you have any questions you ask please pose them with our pot with! QA and will address them at the end of basic show bodies running for titles and title voting arm but that's obviously only available to those who are in live chat room if you want to suggest titles were show the episode now the show structure has changed and for those people that's arm don't read to extortion arm which is fine and a very busy hour but now every show is going be recorded the same time on the same date every week from this day forward pretty much now the schedule for recording of all shows contact distortion is our contact casts and you'll see a nice table that shows all of the future recording dates the episodes and the year and the podcasting question so for those that don't really don't follow my asked extortion my Twitter feed our Vic Hudson will be joining me now for most episodes and I'll be bringing on guest hosts based on specific topics just I have been doing but just won't be every week so far so thank you for agreeing to do come on with me Vic not a problem fantastic so what we've got is some recording times are for you so the live listeners 1 PM US Eastern standard Time 8 AM US Pacific time are 6 PM Greenwich mean Time and if you're an earlybird 3 AM Australian Eastern standard Time or if you're an insomniac menu and Aussie so far I've also had some recent feedback that some people miss the Q&A sessions after episodes 35 and 36 that if you did this make sure you listen right to the end of the show after the outright music that's romping the Q&A from the chat room after the show if there is any normally there is arm to our last three episodes have had Q&A after Sophie missed it go back and listen to it there is some great stuff in there was a quick shout out to ham and cheese from the USA arm for lovelier review on iTunes it's always appreciated and if you are enjoying the show and you haven't yet reviewed or rated on iTunes please feel free to do so at your convenience no pressure alrighty so without further ado let's get stuck in so today I want to talk about the evolution of the watch and is what has spurred this off specifically the wristwatch arm would split us off is the recent announcement a few weeks ago the Apple watch you aware of this are Apple watch announcement Levick I think I might have hurt a little bit about it in passing now maybe in passing Lego the thing is there i.e. a lot of people seem to seem like a minor thing alien it was there was Tim Cook's one more thing was none are so you know hands pump in the air gay thing they can be wrong though I mean it looks very impressive but there's been a lot of talk punditry I guess you'd call it that I've been listening to an pod casts and reading on different websites and some of it kind of rubbed out the wrong way because I just that there is some fundamental disconnects, I really want try and close out this is not our speculation about the Apple watch it's not what this is going to be this is going to be, look at where we how we got to where we are now and where I think it needs to go irrespective of whether the other what does and doesn't do certain things so as usual I'm doing it my way so if you're looking for predictions or whatever about the other what they might be a handful of them but it's really not the focus of this of this episode but then that's never focused of any episode of pragmatic right so first of all Vic only start with the perhaps obvious question do you own and or and importantly where a wristwatch regularly arm I have owned a few wristwatches and aware one regularly anymore because I can adjust for scenes they get rid of an historic Aryan cell phones my phone I was at a time keeping busy my bucket anyway so to seem like one extra thing that add in the dam army yes it is exactly my story is I used to love my watch I had no chronograph are watchers that played really cool melodies and Jones oval while I thought they were cool but then and I would think that are the honest truth though is that I found is that it was redundant because I had the phone and at that stage a sort of gave it away as being unnecessary so anyway okay so what was what was the point of the question I guess the point is that we used to wear watchers but now we don't because they've been supplanted by the mobile phone question is whether or not is arm whether or not smart watchers can reverse that trend and bring watch wristwatches back to predominance and I've had a look around our organise and train over the last few weeks in prep preparation for this and the number of people aware wristwatches it was more than I thought but it was around about 1/4 of the people on the train wall was wristwatch and that really statistically that's still a big slice but at the same time that's not as many as I meant when I was like mosaic 20 years ago when I saw a watch where would practically be every person and the person the dinnerware wristwatch was the exception anyway that's anecdotal evidence mechanical watchers so the thing about mechanical watches is they started long time ago 15th century in Europe actually and they were purely mechanical devices these mechanically wound spring to drive the hands over winding was a very common problem until labia brawling over wanting protection mechanisms and all that and every morning the ideal you'd be wood are the watch would need to be wound in time synchronise the town clock usually in the post office are Tower town Hall but the biggest problem with mechanical watchers the nonlinear rate of time passing relatively mad tension spring obviously these watchers therefore in a drifted a bit more particularly super accurate but accurate enough now in on any given day is beyond that they weren't so anyway the wristwatch was really first thing the 16th century and actually Queen Elizabeth anecdotally anyway was so was given one at one stage the gift but back then was referred to an arm watch which is interesting as opposed to a wristwatch biggest comics saw some sense anyway the funny thing I found is that it was actually that I was until the 20th century that wristwatches arm were worn by men generally because until that point are almost exclusively worn by women are as a fashion item as well as an practical item is men's fashion landlords yet was interesting because men men's fashion lean more towards pocket watches so if you look at the period accurate movies CO that sort of you will notice that the men of that sort of era you would get out there what anyway so even with centuries of refinement the mechanical was still in reliability issues and accuracy problems gaining or losing multiple seconds a day at our best at them at that their best so not the most accurate timepieces in the world, another government work as they say but obviously room for improvement certainly not set and forget item that are sure okay so we moved to electronic wristwatches so in 1967 the first electronic wristwatch his frequency was derived from the vibration of quartz crystal is made by CH in Switzerland first production watch are in 1967 only sold 6000 units and had less than a year of battery life there is no why would go as far as to say essentially a prototype that they sold anyway what is regarded to be the first really successful arm quartz movement watch was the Seiko 35 SQ Astron that came out in 1969 the thing is that even the cheapest quartz kids watch today is 10 times more accurate than any mechanical watch so that is giving idea of the difference in accuracy and by 1978 Seiko watchers are essentially topping our five years of battery life that's a sort approach on a shelf life of the battery anyway which is there really much the standard expectation wristwatch battery life ever since that point so we sort of expect White to replace the battery now watchers you every four or five years you are pretty standard I think that was my expectation anyway and I don't and I think that's pretty standard if you watchers out a claim is that accuracy things that hold true to even today's modern mechanical watchers yes there is also the problem is mechanical watchers is that the thermal expansion and contraction very very small subtle differences in temperature effect arm the rate at which it basically releases its energy and therefore the time between ticks and so it is also the balancing and counterbalancing in all sorts of really call ingenious ways that come to reduce that which you can't eliminate whereas vibrating courts will always resonator whatever frequency it always resonates at and therefore you know it's a constant year it's that's not temperature dependent or rather if it is tempted depended it's of its very very small given attempt to variations that you would see a typical day for the average user to remind you still nothing about an atomic clock arm but that's another story I'm trying to stay mainstream here so will stick a mainstream stuff because believe me it is a little every kind of what that was ever designed and built good God I would literally be here for weeks because yet if you can imagine that it's been tried it's been trite so distrusted with a mainstream once the thing is though got me thinking about's electric watchers in originally with caustics quartz you needed to have a battery that of the Newsday's majority watchers are quartz movements now the interesting thing is that there actually was for a while arm while sorry there was actually I should say not for a while but before that there were electric analogue watchers so, like an electric mechanical watch so know that they're not wound mechanically but they are still mechanical watch so those battery-powered ones are they stiff first one that was released wow that was essentially was very popular was the Hamilton Electric 500 and that was back in 1957 and it was notable because it was very favoured by Elvis Presley apparently not a big Elvis fan on the same model be overspent but apparently so to the idea of never having a wider watchers very appealing but all the early models had problems are and you had to go back to repair battery life is terrible is back 12 months are very similar to the first are quartz watch actually are the CH and watch now I deliver digging on this one because I was curious to see how much power the things actually consumed so going back to that that particular model the very first model one year battery life get information on the existing boundary is difficult so the original Barry was a 201 and nowadays is replaced by silver oxide are 380 7S now particular one is a 1.55 which is pretty standard watch voltage 12 mA our cell went for an annex that's basically fitted to a fire or get us in between 10 to 14 months of use and in Hamilton Electric 507 those aren't aren't aware of some terminology just milliamp hours milliwatt hours on a switch between those quite a bit during the episode so milliamps is arm's amps area divided by thousands of thousandth thousandths of an amp art which is a measure of our how many electrons go past kilos of charge and we do as you multiply by a number of hours so if I'm drawing 1 mA for a period of one hour that is 1 mA hour of capacity charge whatever you call our milliwatt hours or what hours same kind of thing except not the current but the power and power takes into account voltage because power is equal voltage times current peoples VI so you can express our child is unique in that the problem is that voltages are batteries will be different therefore in order to have a accurate comparison high-voltage lower current the same manner power transfers are what you want to do is you need to account for the voltage so I'll talk a bit about current on talking about the boundary definition but then I'll switch across the talk about milliwatt hours because that's more that is universal and takes out the voltage out of the equation aggressively work backwards from that and assume that our the consumption is constant over that period of time which is not true yard but we can assume that it is because obviously batteries degrade with time and as you draw more out of them the efficiency is reduced therefore you get less our powder out of them at sort of falls off the cursor falls off towards the end and also dips a lot of the beginning as well and every kind of battery is slightly different not from be mangled that description but let's just say it's not linear but let's assume for the purpose of discussion that it's linear so in a particular case Hamilton Electric 500 using a 380 7S silver oxide batteries a modern battery are we looking at about 2.1 µW of power consumption continuous microwatts that's 1 millionth of a what power consumption which is not a lot at all so anyway keep that number in mind will come back to it later okay so next thing it's interesting is digital watchers because that's the the next thing you want to be interested in now I say one incident that is that they actually first came in the 1920s and is it sounds odd that you have a digital mechanical watch but it's true they actually did have them such that as the time passed the year the minutes would would click past as a series of numbers so was the whole idea of the round dials right seat had to round I'll get in there be a cut out of the mechanical phase of the watch and it would simply click over from near zero all around nine are on each site wow 09 on the right for the minutes and a 06 from the left for the further the tens of minutes or tens of hours so digital watchers actually from that point of view from their watch face of Ashley Barraza's 1920s arm than the original popular one was and he was a French one numb the spouse court about butter Hamilton actually once again same company are maids the digital clock that featured in 2001 a space Odyssey and was a digital clock not wristwatch in the digital clock and when they did that especially for the movie it sort of inspired them to join forces with electro data at the time of the company at the time and they developed the first digital LED wristwatch and was, called the pulsar and it was in 1972 had a red LED display and I remember distinctly because it was featured in our 007 living in our live and let die so if you remember live and let die if your bonnet I like your bonnet like me you're your and your know that that was the one that he looks at when I think is in the cupboard or in bedroom or something like that is being interrupted arm by M coming in the centre mountain on on on his mission Jesus sounds so sticky when ice but anyway the street arm that yes on day very quickly swapped it for as beautiful shiny new Rolex watches got the magnetised that the super magazine ad in the year the Cadiz mini dial disc thingy but no one else to call it in that super technical term but yet so swapped that that Whatley ditches the ditches the pulsar package anyway sago say switches to the Rolex be briefly held on the pulsar what side sort of the ACM push the button and the bread to numbers, very cool anyway now the problem with this particular watch is that it had a requirement while high-voltage and is it actually used 2355 batteries the problem is that battery life and why mocha did to deep into it although the 355 battery is once again 1.55 V that's it's much much higher capacity ~40 mA silver oxide and the two of them so that's a reasonable amount of grant there in terms of power so it only lasted between 9 to 24 months and the reason that it was so variable is because it depended on how often you push the button because the numbers didn't light up unless you push the button so view is lifted to wrist up to have a look at the time of the blanket to push the button to see the time so obviously as awesome because it was the 1972 and it was four years before I was born arm two years owning for you want to write you that was ultra futuristic super call God damn awesome unfortunately if a practicality point of view, sucked so the next step was to move away from LED watchers because IDs draw away to much power for a wristwatch and that's when LCD sort of became popular they came out around about the same time and they really did take off because they were cheaper they were always on and therefore they have a much better battery life compared to LED watchers even though continuously on the only downside with them was if you had polarised glasses like sunglasses are makes them more or less impossible read are which you know is sucks but apart from that you know it was a pretty rainbow on it you guess is a feature that anyway so it was been very very hard and I was researching try to find power consumption for hourly LCDs but I did find one particular model which is a 5 x 9 segment and it consumed 550 nano amps so that's one billionth of an amp that's the LCD obviously there's a lot more pairing a digital watch including a CPU ram clock whatever else the Minister forgotten that you know it sort of mama CPI said CPI Max permit RAM and are an real-time clock in your bits and bobs right back like probably so secondary to night-time arm because because current phosphorescence on LCD and as they did to with aliquot what I watchers is they put phosphorescence are indicators so during the daytime they were down essentially there are two types of types that would would essentially be activated by sunlight and then after hours they are your they were glow-in-the-dark and you could tell the time the dark on the hands and they have other ones were radioactive all the time and is our only tritium was quite popular for a while but is also expensive so didn't really last half of my 10 years and tritium being tritium this kind of thing are hard to come by expensive stuff so what great things battery know is that because the year are it's our radioactive decay was not capable of penetrating the glass on the front so you don't have to worry about getting any kind of exposure to help you watch up to your face or whatever else can estimate that you have no solid cobalt or anything crazy you know so anyway arm right so yes hours of the backlighting and all answer all those different things you would will consume more than five and 50 nano amps but the point is that it's considerably less than the LEDs so anyway ultimately that I was stuck with what they call the nine segment I submitted is nine segment this week because of the nine segment arranged then in the figure 8 you can make it make it look like any number or you want from 0 to 9 which made that obviously very appealing are but you're restricted you can only make that sort of work smaller because of your young creative and hold upside down think you can make moves in other words that any was not fixed and that the truth is that it was meant for displaying the time and only time if you want the ultimate inflexibility you display needs to be pixelated in other words you made of discrete pixels that you can turn on and off and into indistinct patterns obviously that draws a lot more power but that's inevitably where would this discussions can go but before we do I dislike to talk briefly about the sponsor and that's matrix so matrix is a great software developer company whose apps do you guessed it many tricks as their name suggests their apps include Butler chemo Leach desktop curtain time sink a show Moon name angler and which the summit or beverage app that they make the solicitor touch on some highlights of four of them so with which you should think about which is a supercharger view command tab apps which are which is great for and is very popular with ex-Windows users like me if you got three or four documents open at once and anyone app than with which is beautifully simple pop up quickly X is exactly the one you're looking for a name angler if you got a bunch of files that you need to rename quickly efficiently in large numbers the name angler can extract things in the meta data from files used to rename 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And flip the Mac there is no need to convert anything to an iTunes format watch it so you gotta be a collection scattered across different programs drives and formats and Usher can help you straighten an all-out analysis for their great apps this still five more to check out as well now all those outside mention of free trials you can download them from many tricks all one and try them out before you buy them and they're available to buy from the respective our pages on that site all through the Mac App Store if you prefer to buy apps to the app store now many tricks have been a big supporter of the show and is they have once again been so gracious as to extend a special discount offer just for pragmatic business simply is pragmatic 25 that's pragmatic the word and to find the numbers in the discount code box in a shopping cart receive 25% off this offer is only available pragmatic business for a limited time so take advantage of it while you can thank you once again to many tricks for sponsoring pragmatic again so I want a little bit more about screens and then it's going to be time to talk about the other little things like what I know char batteries and charging these things so let's look at smartwatch screens toe in terms of big side screens were left office before the end if we look at iPhone 5 on iPhone 5 screen power consumption at full brightness it's .74 W now display technology is getting better all the time and that amount of power is reducing slightly with each passing year but not huge amounts so if we assume that there is a that the size to power ratio is linear which it may not actually be linear but for the sake of this discussion I think it's useful to think of it as being linear so the iPhone 5 screen is 6.7 in˛ and that works out to 4323 mm˛ now with an exact dimensions on the Apple watch but let's are based on its the photographs we know that it is 42 mm is one dimension therefore relatively weak and egg estimates that 37 mm is the other dimension that gives us 1554 mm˛ which is 36% of the size of an iPhone 5 screen so it is linear relate that back to the power it works out a .26 W or 260 mW if you prefer that amateurs can take a drive that screen and full brightness now obviously the stem of a similar basis of a lot of the disc a lot of the rest of the show is that figure and I do realise and acknowledge from Hannah right now that yes indeed that is full brightness and full brightness does not necessarily mean you have four brothers all the time you're indoors not only for brightness if you're outdoors though you will so it's gonna be a balance obviously perhaps the worst case scenario but either way as will see the numbers not so unrealistic we work through figures earlier I like the weather do and they are worse which is often on automatically surgeries at the ready rest absolutely and that's why that's the next component of this so let's assume that were awake and wearing a watch for 13 hours of the day so take out nine hours of sleeping a few hours of mucking around getting dressed under establish our whatever they could do don't need to know 13 hours a day we run with that is our figure now that the could be less than that many people will be some who will be less than that other people be more than that everybody sleep one our night specifically young kids who knows assuming arm in an average hour that we can have the screen on for just five minutes now that is the be the next biggest leap in assumptions and how I sort of, that is if you think about how use if I thought about how I use my phone I have this problem with have this problem where I keep checking my phone for messages and I know not any person has this problem but ego so you'll pull the phone out of your pocket turn on the screen check the messages scrolling down little bit maybe responder one or two lock the phone put it back in your pocket and I do that and that whole process might take if you you glance and there is no messages you'll be in and done in five seconds screens lit the screen is less than five seconds and is off again but if there is a message it could be up to a minute so if you sort of average that out in a given out. I think five minutes is a reasonably reasonable sorter average number to go with so yes checking you that's getting a message maybe once every 10 minutes or so maybe once every 1215 minutes on that and the occasional cheque we got no messages so if you assume same colour usage feel what's checking the watch or checking the time and you watch will only be eliminated for about three or four seconds as you raise your wrist to look at the time and then drop your wrist again when you're done then I think five minutes in total out of an hour is probably reasonable obviously we will use more analytical use less molasses drama that the union sounds reasonable enough Oracle so if you use that so 13 hours five minutes in our at 26 wants it works out at 282 mW hours now that's just for the screen alone as that's how much power you need to reserve and a battery to drive the screen in any given day so 280 mW hours now compare and contrast that with the power consumption required to run one of those mechanical watches in a day it's enormous compared to that huge very significant is yet very significant and that's just the display that's another is the Aurelio snow radios Nottingham that's it no matter the stuff just screen so thinking obviously that's why would you use a screen like you've got in the iPhone 5 and I guess the answer for this is that while we know Apple I mean I know Apple and are liable tends to work they like the display technology the way they like it which is high rent no way chronicle retinal rent HD hi DPI are very bright reasonably good performance outdoors in sunlight you sort of thing that they will say well you know arm will have the best looking display and we will and will make the battery adequate and that's an extensive approach which you know I understand but then you look at other people like our Amazon and AUC Inc for their displays and the kindles and Qualcomm of develops a card another display called dad aerosol which is still I think there's are a thing as any other washout that uses aerosol display and you these ones offer a lot better performance but there's other trade-offs like refresh rate arm and is obviously the resolution although recently Amazon has released a high-resolution being display for the kindles the paper light I believe hours are called arm voyage though that something like that year now voyage summer Voyager and arm in any case my point is that there is advancement going on there but the refresh rate will always be an issue as well as depth of colour so ultimately the display technology sort of is beyond the scope of this episode imprimatur good topic for a future episode that will flag and come back that one day but for the purposes of discussing smartwatch as the father of the vast majority smart watches of come out of the market so far not to augment a pebble are vast majority of them ones like the Yum the Galaxy gear are Murrell 360 and the shortly upcoming Apple watch they do not use any of those technologies they use arm and LED-based technology LCD based technology they they do not use arm aerosol or ink so that's all I say about them so little about charm charging these things going you and the reason that that I wanted to about this is that I've heard people say why don't they just insert magical device here and it'll all work out I shake my head and my okay while his wife so let's start by talking about the two big ones they want talk about our kinetics and solar power S kinetics are just love kinetics is such a cool idea what I didn't realise it because I live always the I've heard of the Seiko kinetic our watches and I've always been fascinated with the idea and my young grandfather had had a kinetic watch are which had issues but anyway that's fine and it's our is actually self winding watches or automatic watches with their original names before you Seiko thing I think my monitor of your Sega coined the term kinetic but in any case arm automatic and self wanting watches but not necessarily wristwatches dated back to the late 1770s the income become popular mainstream until John Harwood in 1923 designs his particular self winding watch it in icing underproduction until 1928 struggle to get someone to make it our best Swiss watchmaker called Fortis or forte I forget how spacey pronounced are unfortunately Harwood's company went bust in the great depression alas and that was in about what is a joint venture with that's was Swiss watchmaker the idea behind these watches if you're not sure how they work is that they have an off centre weight spins around as the watch moves so far as around an axis and that wines the mainspring for mechanical watch now that's a wonderful mechanical watch but when it came to quartz movements you need are crispy so the idea there is some same thing off weight on a shaft that is geared up a few hundred times the micro gears right really tiny years that that the wind that up and what that does that does that creates a pulse lexical pulse through a coil and that's electrical charge that is generated from that is stored in a usually in a rechargeable battery or a capacitor sometimes referred to as a super capacitor or super Short arm and then that's death that is used then to either drive the physical hands or to a RAI handful digital ones as well but the vast majority of kinetic watch Seiko kinetics are the year McCann mechanical hands now the original Seiko kinetic watch is used super caps and they were marketed as being no battery yea batteries are the enemy rate go kinetic and are designed to run the watch for 72 hours without any movement and the idea was IO I imagine is that you were last the weekend see go to work five days a week take the watch for that we watch on the weekend you come back on Monday it still goniometer just the time lightly sent that state would be my presumption is addressed yet exactly me it's address what right so if it turns out that you're wearing it once a week so much for that you will be setting a time shaky shaky the wrist and then you can go for a walk so you I know so the problem with it is at the turns out is that super caps proved to be less reliable than they would have liked maybe it was a technology at the time I think perhaps it was but irrespective since then the majority of kinetic watches have gone to lithium batteries are rechargeable ones technically there are lithium and titanate batteries and the problem of course with that is that well I thought we would try to get away from batteries and now adding batteries so okay no matter how you look at rechargeable batteries again replacement eventually because we all know batteries suffer from our memory effect and eventually they do stop holding charge so as a whole bunch of issues every battery technology that rechargeable inevitably eventually will die it'll break down and die there is no such thing as a barrier lasts an indefinite period of time theoretically a super capacitor should but it doesn't either because no super caps got installation than the other day they could corrode that last forever either they usually start swelling and bolting guilty are you thinking of electrolytic's and yes and literally and occasionally of electrolytic yes but not all super Catholic leading some of them will be may be able to handle absorb all the different materials but it you irrespective you will get leakage you will get decay because the things things age with time against the whole ire summer when I was one of the kid before you knew anything our morning much except our allowed that sort of arm idea that I know I'll park the car for a year and then because not using it it'll be fine I'll dispel start the car again right sure because now you get older you realise will hang on a minute if I don't run the engine then seals will dry out what's the rubber is still a deteriorate with time because the rubbers can age so goal powdery and crack and slam a tidal habit will have had it and then my yellow if the battery will go flat even if you disconnected a little discharge so time moves forward things deteriorate you can't stop so once you build anything it starts to deteriorate are well that's as entropy foyer anyway so rechargeable batteries are still only replacement now the other interesting thing about kinetic watches is that as people derive more places and they walk less and they sit at desks all day long there's a lot of questions surrounding whether or not there's actually enough movements that goes into regulating its yet to actually keep that what's going at a good level of charge so the problem is if you're doing because obviously what you want to do is you honour top the charge up and keep it relatively well charged in a room you relatively you know what a relatively flat you want to overcharge it by running all the time let's say that the movement does it typically take for those emulate if you're sitting at your desk moving lake between your keyboard and and things are working on is that enough movements are generated it is innately need to be like your arm swing on your side as you walk okay the problem is that one is it's hard to find data on that but all of the data is related to walking so if you think about the way the mechanism works I would suggest you need more movement to get much benefit say not happy walking I think to get much more than most benefit out of it when visitors the problem is that white as people say he's a scenario I go my kinetic watch and I sit at my desk over death job all day long ago immediacy and the meaning of our day I go downstairs in the basement I get in my car I drive home basement parking lot car park with Romeo station mole waiver and I drive home I get home I sit down and read the paper waiver I'm not doing a lot of movement and then my kinetic watch keeps on losing time and unlike stupid kinetic watch this is a piece of garbage on it's actually not of his garbage is not moving enough so this is that this is the issue type right how much goes into it is because you are different usage patterns and lifestyles then the reports of the longevity of a rechargeable kinetic watch value will very very very very wildly between 3 to 8 years because obviously if you're not using enough not charging it consistently then you're gonna kill the battery in the rechargeable battery will simply die because it's been mistreated but is no real way for you to get a handle on that other than being mindful of how much you move around because no real feedback mechanism some of the kinetic watch is a little but you can press to give an idea of the relative charge but that's no doesn't really help that much easier to keep track of how often you charging and discharging is a lot more obvious with a financial about constant battery indicator and you know when you charge the new disconnected it you know when you could plug into charged against those lot easier to keep track of your fully discharging it you all that stuff but that's not really easy with a kinetic watch so if you're faced with that kind of thing 3 to 8 years say on a three-year mark or wire she just getting a watch with a five year battery and if you replace the dam rechargeable battery every three years and that's why a lot of people say well what's the point of having a kinetic watch apart from the cool factor of thinking hey after potentially replace the alkaline battery listening hurrah so anyway all right kinetic power everything is in swings so swings of your arm of course is what I meant by that meaning else but Sedalia swings in the arm so as to take are going to say because you connect augmentation 250 swings will give you one day of reserve up to a maximum of six months so brainy rechargeable battery can hold maximum six month supply so you walk 360 m that's about 250 arm swings so depending on how you think about and I was that depends on your height your walking gait it's all very no law of averages was run with that those of the figures are will normalise them in a minute now the standard battery that they would use in our one a kinetic watches is AR Maxalt TC 920 yes that's a titanium carbon lithium rechargeable cell 1.5 V is believable not our 3.5 million of our cell so the watch power consumption if you do the maths .8 µA 1.2 µW that ignores leakage but you know you're assuming a charging and I semiregular basis by swinging around but I think about its 28.75 µW per day therefore you need .115 µW per swing arm which is 1.44 m per swing an average and let's assume that you are trying to use kinetics to Chatham to run that beautiful display because that's when the idea kicked around while is kinetics interconnects will charge the Apple watch display or the Galaxy gear let's do that well .26 W screen for five minutes in our so you looking at arm 22 mW hours to take 1000 188,406 swings so that would be to walk for 271 km or hundred 68 miles whale which is a further walk in if you prefer of course arm you could think of it this way and that is if you walk 400 m author and 28 Fiji Power screen 410 ms so you won't be a blink or you'll miss it and don't blink or your message so yeah okay that's really not a significant charging technology no herniation yet it's perfect well I say perfect minutes it it works mostly the people that are active or more relatively active and if you're driving a mechanical mechanism that had hundreds of years of evolution and is extremely low power as a result so that's kinetics select solar power as an extra one right suspicious solar assault salon therein everything will be fine ear can really see Apple put a solar cell rate on top of that think they were eager okay so here's what I want done with this one is I'm afraid I drive drive trodden into the unrealistic territory to make a point so let's go let let's just just the right role with roll run with me through just a second and will get will get there okay let's assume that fully transparent solar panels exist like they do exist but they only really exist in lab they haven't been mass produced and they are expensive right now to have your neck do not cost effective so the next problem is that they typically only capture a very small number of wavelengths now for those who would have let the listen to our episode to the battery problem talk about solar power solar cells and deficiencies one of things that are people done in the research and development is that they have got this idea of different layers of cell of silicon will capture different wavelengths such that sunlight from our son course consists of energy at different wavelengths and that blends together give us what we consider the white light as water ice perceives being white light so the ideal solar panels have a at this point in time have got multiple layers three layers actually capturing different sections of the spectrum and that energy gives in the maximum efficiency in the lab not mass produced of 44.7% that's the current best laboratory solar cell ever produced so let's put that with a transparent fully transparent solar panel which also is not beyond the laboratory is also not multiple wavelengths and let's assume it will do that in this theoretical watch then the whole fruit crystals can be the select panel is exactly where I'm going yes plug a lot of impulses on a visual eyesore which is more the Apple slant you it's not just Apple slant obviously is real estate screen real estate is king you your small screen obviously you don't want a wasted one half of the Cordova even attentive on a solar panel but the analysis assume that you've got the ability to put a fully transparent layer on this and it's 44.7 feet percent efficient so few facts about direct sunlight in direct sunlight hundred and 20 W per square metre maximum irradiance that's direct sunlight no cloud cover known nothing indoor fluorescent lighting has only got a fraction of the irradiance from the sun now obviously depends on the kind of lightbulb so it's gonna be really hard to defend a figure on it but think about how much power a light bulb has like to say 36 W arm fluorescent tube pretty standard and office arm of that you are not gonna convert all that into solar energy so let's assume that at a workable height which should be a distance of vitamin A maybe six or 7 feet from the light source you get maybe 110/10 to 12 W per square metre so once again will talk about the Apple watch dimensions so again estimated because file dimensions are not available yet but 42 mm x 30 to 37 cm bar while what I do say 40 mm x 37 mm that is our 0.001554 m˛ so you looking at outdoors eulogy will be out to capture a maximum with all the efficiencies applied of 83 mW outdoors and therefore 8.3 mW indoors assume two hours of usable charging sunlight every day that's direct sunlight at perfect angle of incidence I was perpendicular son at all times no clouds and 11 hours indoors so I'm assuming that you have that same 12 no that SAS is AR same amount of of of energy everywhere in the office in the home in the car on the train you gotta have the same amount constantly and 11 hours at the perfect angle helluva lot of perfect in here rate so that you give us your business give us a sum total of 257 mW hours a day now we needed 280 mW hours a day for the screen alone so that's not even enough to run the screen close but remember Whittle about to that technology is the don't go together yet and fact neither of those technologies even on their own actually work on their own arm in it in on a mass scale that are all still laboratory-based also making some actually crazy assumptions that went outside you hold your wrist up to the sunlight at the perfect angle for two hours every day you can do at now maybe if you're lucky you put on the windowsill that if you go window desk in your office building that if you work in an office building if you're like me and you're stuck in a cubicle and you're a cubicle or two away from the window or if the side of the building that you you have to have your desk at ease on the wrong side of the building another website relative to the predominant angle of the sun like northern southern facing whatever depending on whatever our hemisphere on you're not gonna get that choice either and even if you didn't do that what's the point Hannah Watford said on the day windowsill charging so yeah I gotta go smart what's it's not arrests yea they were still talking about just powering the screen we still have a whole lot of stuff having how the rest of yet so against all those bills acknowledge that doesn't exist and it still wouldn't be enough so realistically with current technology honestly how much real estate would you sacrifice to get any additional solar energy boost even as the boost 5 mm of the screen space 10 mm is quite a bit maturing India 42 mm there someone about them at the ends of the majority people as none because space is a premium but even it had 10 mm strip along the top with current technology at best you extend the battery off the watchman maybe 2 to 3% is not worth it as a matter is just not worth it and that's why they didn't do it and that's why they won't do it so no solar giving honestly arm to his next thing if you had kinetically had solar what you need to store the energy so you have a battery and rechargeable battery anyway so people say I have had solar organic you have to worry about rechargeable battery and I unaware these people get this idea from the point is that you need to store it somehow now I know when I was a solar city super capacitors but there is this another problem super capacitors and create sounds crazy but it's it's it's it's actually got to do with energy density so batteries Barry suffer memory effect capacitors don't worry talk about the problems of super capacitors you that's fine but honestly the issue really for me is energy density so a lithium ion battery you're looking at about the absolute best with your mind you can get is arm the measurement of its of its capacity and lingual measure in 1000 say are an ass in measured over volume so that the density so 731 hours per litre absolute best assets that the units of values and asked me why it's per litre one per cubic metre I guess it's too big to the cubic decimetre whatever doesn't really matter the point is that that that that that is that now the best super capacitor that I could find is about 10% that number so as to reach the same energy density need something that is 10 times the size so it works with the Connecticut watch because I can edit watch with a super In their yea you don't need to store much power 3.5 million of hours a thing is all you need to store so that's not so bad but when you've got a store several hundred million hours that's a problem you can't use super caps were to be so great things about super caps when they do beat our batteries is their power density as opposed to the energy density is a subtle but important difference because as I said before peoples VI rights if you kick up voltage you increase the amount of power the downside is the same our current the downside is that you need more insulation because it as you charge of the two plates then you you that the charges gone on was going to want arc between the two plates to equalise the charge so the issue is that you gotta have better insulation between which takes up more space and higher voltages in a wristwatch stop and a workout so super caps around CI rechargeable battery anyway if you have kinetically and have solely greater rechargeable batteries again rechargeable battery then you have to have an external charging circuit for anyway so why not forget about the solar forget about kinetic and just charter recharge the dam battery and be done with it and although behold isolated finance honestly thought about it so we sort are stuck with rechargeable batteries you know the high-powered analyses there was a couple instant things I did read about term this will quickly mention the cynical energy harvesting just conical where are the spring back on the hands so as the hands click around like tech around-the-clock surface arm as you force it to detect over the spring back is actually in some watchers this is that they'd actually draw a little minuscule amount of power back from that to go back into the battery and core energy harvesting conical because as a useful figure mechanical movement cephalic regenerative braking yea yes it is exactly so that sky really caught by me when I goes back to the battery order goes into an intermediate capacitor or something is forgettable capacitor that you but the point is that you can't do any of that with an LCD and LED or a screen like that such similar course up and that's the advantage of you 400 years of development is all these people tried all these different ideas of mechanical mechanisms to save energy and down the other course movements been around for 50 years something on and in so eventually things will improve but for the moment we are where we are the smartwatch is so RA before we start talking about GPS is guess the next thing that people kick around sidecar mammals were GPS needs what is right and will be great comes up again so I like to talk about our second spots for the episode and that's our life acts them back to life expelled LIF X is a smart lightbulb that gives you complete control of the colour and intensity of your bulb over Wi-Fi sorted out meanwhile you can set the lie thanks to whatever colour of the rainbow you like as dim or as bright as you like it or control the smart phone 11,000 lm at your disposal it's incredibly bright but it consumes only 18 W of power at maximum but most rooms only about half the power to Bryson because really easy and as a bonus is a range of really cool facts like the lava lamp striving and candle flicker descriptive ambulance in the room like a smart bulb is both energy-efficient and is made to last its rate of 27 years and four hours a day which is equivalent to 40,000 hours of usage chances are your move house before any change lightbulb so there are life expelled now that support Edison screw bayonet and these are new downlights supporting the GU 10 connector that can be pre-ordered at the moment and all models are workable standard vultures around the world between hundred and 240 V AC has developed friendly SDKs for iOS android Ruby which means if you think of a great way to control them you can go out there and build on whatever platform you like right now now contesting some demo bulbs and kids went crazy was an amusing effects and ice have done actually several times sometimes arm sometimes we are didn't realise we will have the room the microphone on your smartphone hears the music is playing and modulates the lightbulb in time making a very cool disco like effect is it is it is cool and isolated school actually is really 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case right so I'm on obviously the that the lens I'm using this whole discussion is the Apple watch so Apple is going to tend to use Apple composers use the past so they can say okay well I'm gonna use this chipset from this vendor because they've given as Botswana passed and so and so forth and vendor evaluation sites also its most reasonable and looking into this to look at past history of Apple products to project falling I do for the watch if they were to do GPS and what you have to go back to the iPhone 4 to find a standalone GPS chip and that I took and back in the on episode one actually have of the show Faraday's cage so arm highly recommend this email if you haven't already report puddle of different iPhones except not the sections are 6+ of July to look at some point now that particular GPS chip was abroad, BCM 4750 and is essentially were GPS trip chips there's two modes of operation what they call acquisition and tracking so initial acquisition has a much higher battery drain but once you're in tracking mode most chips like the broad, going to a low-power tracking mode Simon or ignore the acquisition battery drain unders can go with watching over the modem in the majority of the time which is a course power tracking a low-power tracking now obviously that's an assumption let's say that you are watch your inside a building you don't get clear GPS signals were obviously that blows that out the window because you will be forever trying to acquire satellite signals in order to get a fix on your location so let's just deny assume for a moment that what we can be doing as we going to be in continuous low-power tracking so in a particular mode 13 mW is what draws continuously BCM 47 5013 mW now since that ship was designed Apple now uses fully integrated arm integrated circuits are ASICS and are so young they call my PA A48586078 now the year the S1 I believe the coin you want the Apple watch now when you do that obviously is impossible for me now from the outside to figure out how much power GPS section alone is drawing as I can't do I don't have that information of the chip design I can't tell you that so that's why I'm sort of going with those numbers sub if you assume that you save I'd know maybe 10% are of power by putting it on dye and the reason you say that power is because in order communicate with that particular chip it's done over I squared see and I squared see drivers consume energy if you put on the same die then your drivers can be minuscule that if you need additional drives or maybe I'll drive direct output it's all you have to go out to external circuit board and go back into a chip again so you you save energy by doing that which is one of them on the events of going on the same die however you also gonna get additional savings by going to a small Manufacturing processor as time has gone on since the iPhone 4 there's been improvements to the manufacturing process so if they're down to whatever nanometres are down to obviously you're getting additional savings as well so by the time we get to the S2 chip which would potentially be you include GPS on board in the next version of the Apple watch say on a run with an estimate of 25% power saving so rounded out will call the 10 mW because it's a nice round number after low-power tracking that's for GPS okay so if we assume that we can make our watch smart enough to know when it's outside and I was not in the building such that we only use nearly assuming your why find the building is a pretty safe assumption these days and the assumption that you don't like consume power arm from GPS are by trying to acquire when you inside a building sadly wasteful so assuming that you always and that tracking mode or rather your eye when you're inside so again 13 hours of use tibial same as before 13 hours of use typical business day but they are outside the three of those hours my say three of those hours I mean I'm in a vehicle where I've got live site arm to GPS satellites or I am you walk arounds the between buildings or to and from Traynor on a train you in any environment where I can get GPS signals on and on a train thing I realise of course the bill takes away some of them underground okay fine not in that case but anyway… Go three hours a thing that's reasonable enough so that's 30 mW hours to power the GPS okay so that's sort of an idea of what sort of hit children have to take in order to arm to run GPS so we have to hold that thought for the moment is a lot of assumptions and Abbott will get to talking to the battery a little bit further on so in terms of powering a smartwatch defines a wrapup powering a smartwatch the power requirements of the screen line means that an alkaline battery won't cut it unless you buy new battery every third or fourth day now to do that we used every five years not as a lot of batteries Salah Barry's kinetic plus soul and across reminding right and plus it's a waste issue environmentally so the source of the reasons why you would do that kinetic plus solar it still won't be enough unless of course you want to wrap your entire arm with kinetic charges or a big solar panel both mean we do that actually arm but I can't see anyone actually doing that maybe someone someday will do that will have like a Connecticut arm sleeve for something constructive alignment with ego and say hey I'm environmentally friendly as a shaking there are more than talking to you see owner maybe they will the multiorgan pack Barlett is brilliant yes Berkeley work get work in that movie alright so arm anyway so realistically not so you're stuck with a rechargeable like a lithium ion just like you are in your phone and if you're stuck with charging need to make it through a typical day are necessary challenging enough even with a huge battery so the GPS, draws way too much power to be included in the first cut bites that doesn't mean you won't make it into the next iPhone you really denying the original iPhone right so you have a Salome in the first level what doesn't in the world I would expect would see GPS in them between into a three years because as the power consumption improves then I can see that happening and is improving why not make the software really smart about what intranet often I do yes exactly right so the last bit about charging before we get stuck in to arm the actual Apple watch usefulness are all smartwatch is in general usefulness of the matter let's talk about inductive charging because I heard a couple comments about this and I'm sorry that let's just set the record straight here so some people said that Apple chose inductive charging because inductive charging and a hangar basher for a start about this it's built on MagSafe technology really is it just because the funny thing is MagSafe technology last time I checked used physical contacts to transfer the power it's based on Magyar MagSafe technology in the same sense that it uses magnets to align itself so you can just as easily say and be far more accurate to say that it's based on the smart cover technology which also uses magnets and you have a pull quote from Steve jobs it uses magnets and I know that this is sound so cheesy to me that you honestly inductive charging are open there is no other piece of apple equipment that I'm aware of that is ever used inductive charging correctly from wrong at all or any sustain a space inductive charging is disingenuous this is wrong anyway right about the complainant away middle of my life okey-dokey so inductive charging one of Italy's inductive charging well because it's glossy and it's inefficient basically arm so and if you've got a battery and you go between what arm wired and inductive than inductive will take longer to charge the best performing charge that I could find inductive charger was 86% efficient versus the cable essentially has no loss that if you exclude contact losses which is like a fraction of a percent in no and we talked about all that on them on the arm got paid contacts upside down there extra oxygen anyway so inductive charger is the only at the inside of the whiteboard limit of five get this correct arm basically if it's kind of the same mechanism is like the kinetic charging would use accepted using magnetic fields from the charger to stimulate that that rate that is correct so what you essentially have a coil are inside the device and an alternating field on the charging pad when you put the two together essentially a couple just like a transformer is a primary and secondary winding and transfers the power across but the difference is a transformer and it was our Transformers like 90 something 90 E whatever percent efficient cycle yet and that's because they've got laminated arm Neo lamina special laminated steel that Sir inserted between them to improve the magnetic coupling that doesn't exist between the phone and the charging clip or in the case of most inductive charge these days are charging pad on the back of the phone and insured improve the efficiency of he could shove a bunch of metal between the two care that's not gonna happen aright so just to plug any smartphone at the attic currently has inductive charging I picked the HTC sensation because it's sensational whatever anyway its dimensions are 126.1 x 65.4 x 11.3 which is our millimetres which is a 4.96 x 2.57 x 0.44" so that whole arm area is the actual dimensions of the phone and if you look at it because I couldn't find exact dimensions of the charging coil is the charging coils are in relative terms about 30 mm˛ now it states consists is basically a coil it's our spiralling inwards So are it starts out large diameter and gets a small diameter was the centre so 30 mm˛ the depth unfortunately is unknown but knowing what I know on a go with about 3 mm so still relatively thin in a three mil is not about now because of the power requirements of HTC sensation can be considerably more larger barrier charge of course are and therefore you will have a height high charging rate otherwise will be sitting inductive charger forever before you can use it so I have a charge overnight just like an iPhone our sides can have a large coil large coil more power transferring a large battery need your bill makes perfect sense women think so but without a watch as much again a bit smaller however if we are so we assume a semi-small at all that that's one good now everything is compared was compared aligning now lightning represented lighting connectors represent a big space saving over 30 pin dock around about the same depth around about the same height but a very very reduced our width so is no longer at this this huge white canker sounds really nice cute little narrow thing but more importantly of corsets is not keyed to a specific orientation which is awesome more cables like that please to the rest of the world I know it's harder just suck it up and do it anyway okay Apple did so you should suck it up until 2 AM AI arm at my sales pitch to anyone who is listening his on a standard board which is proper not many AI aright so lining socket takes approximately 10 mm wide Telemann 10 mm long by about 6 mm high so yes it is think about twice that the thickness of a charging coils going to be but if you look at it from a volume point of view I say you are given the reduction in size from the on the Apple watch IPA is somewhere between 1/4 half to 1/4 of the volume of the coils so if that one particular dimension that that that why dimension the height dimension if that is a problem I can see how the coil would be better but in terms of actual volume the lighting connectors can take up less space so there is not there is no argument on the only study I missed and maybe take at the same amount of space but there is no way to charging was can take up less space are centres of volume than the lightning connect I just can't see that is cut 30 pin dock sure lightning no way so anyone thinks that they've added the inductive coil to save on space are IIB stunned if that were the case the only exception that might be that they wanted to make better utilisation of the round area that you see behind the back of the on the back of a watch and a coil would fit nicely around that as opposed to having a connector which would you ruin the look of the watch but in that they were never use a connector anyway and 11 is a connector like lightning connector simply because the obvious one while what why think is obvious is water ingress moisture ingress her name is me what to get wet the only with this truth swelling they do with that whole greatness a levity that will let you exactly exhibit yet plus the appearance would be bit bit odd but you know Dennis how to get around with cheaper watchers already like this that have Charging others I have a rubber plug that goes on and it looks horrible and a young carpet and they they fall off and be a den looks terrible so this is a really good other reasons birds want to squash the idea that the doing it to save vast space know they aren't the I be stunned if they were and we won't know for sure I guess I'll find out soon enough well soon enough in a few months time when I fix it to a teardown listings are released so I guess I'm to revisit this and I will either be falling on my sword Asia it's now 6 ounce debit for the future for future me so future me arm this is the sound of me falling on my sword ego arm all this the sound of me being right and being smug about it either way surrogate bull hold that thought for further for future right and honestly that's all I want to say about arm all the battery consumption charging methods and are GPS and so on so next the mixing on talk about is the difference when watching wearables maybe it's obvious maybe is not but the idea is that everything started out as a as a wristwatch and that's really the only thing that people form their wrists in a fall useful purposes obviously decorative purposes different story I'm not augment fashion and icing sugar set again showed this as I am not considering fashion people wear watches for fashion as a fashion statement are unlisted and that because that's not a practical application and I would refer you to the tagline of the show okay fashion is not practical in any way at all so if you want to get on the right of people by the gold Apple watch because it looks nice or gold matches their eye colour of God knows why they would bite you know that's great – may be buying the strongest most waterproof highest longevity highest impact and scratch resistant model which is propagated be the one that stainless steel with the Sapphire front on arm in a proper cost will be more but it will be more sturdy and more likely last that's practical size on consent but irrespective I'm not augment fashion requirements of people say on the one at what is its fashionable yeah well if that not interested so okay for anything the Fitbit Hammerstein number fit bits are a little better than some some research on the wife wants to get one of those kind of devices so would say to me all about history Fitbit if arm if you've covered if you could look into that all walls also features they've got most of that stale device they do basic step counting motion tracking sleepout analysis tape stuff analyses based on accelerometer and gyroscope art so usually Bluetooth. Here is my folder something yes yes yes that's right exactly so not Wi-Fi yes out that not only that I cannot recall seeing any that will know because using Bluetooth for low-energy which makes sense these things got pretty good battery life because it was a pretty good young it better than a smartwatch well but they came into being as part of the fitness thing might the fitness industry so the particular that the Fitbit I think was a 2009 was the first one action came out I think it was I was wise harbour start-ups was there was a kickstart in any case it's arm the first model do not have a clock in it was purely designed to click on the clothes arm and the Fitbit was designed to track your movements and they gave you information on on on your movements now as time has passed some models have never clock built into them fantastic excellent we have a clock built into them now that's well and that's all well and good but no one can argue with you at the new ones and say that they are the best wristwatch you can buy as a clock in but now there are fitness tracking wearable and it's actually targeted at the intersection between technology nuts and fitness nuts and I say not in a good way because on the technology nuts I guess so not meaning that in a detrimental way and in that overlap obviously they found a big business and that's great your power to them but the thing I find fascinating about it is that it's evolved in the reverse direction so I can only talk about this until this moment because of that one fact is that it started out as a wearable that grew into a wants which had watch capability one out watchers that have grown into something that is more than just a watch because up until now that's what's happened because it was that I cover watch my wrist what else can I get out of this thing first and most obvious one early 70s once again arm there was the pressure it was so Hamilton again that dad did a calculator watch and even calculate watchers on offer different company is either Casio calculator watch at one point during my childhood and that was one example so they never really took off Calc I want is you see around my ahead or Gabby exactly so why didn't we use is that we did use it much idea I thought it was cool that nobody else that I was cool did you stop wearing it because you were because what I can hang up what you stop using our iced wearing mine after mine had actual little soft rubber buttons on it and out over a few of them get ripped off iced up okay so it if be presented a reliability issue the other item, cool enough to see when I used mine I found it was an absolute nightmare to use I was forever pushing the wrong button or the bottles pushing Ida push was I to push too hard to make it work some buttons would stick yea the physical interface was terrible assuming that of course you could make the physical info is better more like I know like I like the refinement of the blackberry keyboard but no one ever really popular enough to reach that stage the user interface and was terrible you know what I think pretty young when I have made so idle I don't know that I was able to look at it objectively enough to get past the cool it's calculator award, rest now and sit in and then that's the point is once you get past the cool factor is it actually all that useful and I would put to you that it isn't because mainly because the user interface is so bad and because the user interface is unreliable so it's important to keep them minor lease I think it's important to give in mind when we start looking at the utility of smartwatch is so the Apple watch little bit about its battery is Southam jumping around not I have a reason for doing in this order okay so the iPhone 6 Plus battery which has only recently been released and recently tear down by iFixit again great job guys love it when you guys do that weighs 43 g just if you're interested are and it is 4.7 x 1.9 x 0.13" which is hundred 19 x 48 x 3.3 mm and provides 2915 mW hours of capacity and that is enormous for an iPhone mind you is enormous loan choking drug energy density .15 MWh per cubic millimetre useful keep in mind the based on the photos we can estimate the Apple watch battery at being about 21 x 35 mm assume it is our same thickness as a 6+ battery because we have no depth we have a teardown that assumes about the same 3 1/2 mm, through edge again we assume linearity because wealth we have to do because we have no better information seemingly at linear scalability of capacity and volume that gives us 375 mW hours of capacity in an Apple watch battery based on photos in the feudal assumptions so going back to a 13 hour daily budget looking at the 9 mW continuous maximum power drain to flatten the battery so based on previous figures 5 minutes in and out little in every hour over 13 hours for the screen alone with you is 280 mW hours of talk about before they leave about hundred milliwatt hours for everything else the S1 the Wi-Fi the Bluetooth radios and frankly I actually believe those figures they sound realistic when you consider that you be looking at maybe 5060 mW probably inner for the S1 Oscar include all that stuff for the bid headroom in their yard think that's unreasonable thing is quite possible so I admits a plausible plausibly possibly plausible possible anyhow so that the truth is that's arm that could work and I suspect that those figures are close relatively close reality but I won't be able verify that until we actually have a teardown so it's the way to go they've made its it looks like they've made good design choices so far by some cursory information would be out of assemble but what about user interface because is what why what gets me about calculator watchers you and frankly fit bits as well rain because the fit bits you need to extract the data onto a computer in order to get anything out of it so obviously what you want do is you have the best of both and they've got a dinky die little LL LED display on your wrist you can you actually have the ability to display some of that fitness information as well as to improve on the calculator interface potentially so you those to use cases pothole plus much more sites the filing will go covers user interface so considering everything we talked about is all for nothing if you have a good user interface same is not what is the same smartwatch as I sliced my phone sorry smartphones go back to you know arm Windows CE with resistive touchscreen cider Cassiopeia I had that will palm Palm OS on the Palm pilots in the palm desires and all the different palm via versions that they had it with their graffiti and everything you always resisted touchscreens the multitouch to standard be so much easier and had similar flexibility that it took it to the next level the concept already existed of smartwatch as the question is can you improve the user interface to a point when she becomes the best the best advice on not sold that you can but you know what we can have a look at so the right information has to be available on wristwatches and I really hate seasoning so bloodied brought like that but it has to be the right information has to be useful usable and has to be appropriate information so the more navigating you have to do on that little screen in order to get the information that you want well that's a problem you have cut that to a bare minimum so that's one of the things that they have with with text messages is that they're trying to scan a text message look for probable responses and you get presented with a list of possible responses great that's exactly what you need younger spent ages mucking around trying to enter in full text so that it can be really hard anyway so getting this new technology to be effective you have to have some SME easy to point them fully mobile phone out of your pocket eventually written about this already on Dante distortion a year ago about yellow about smartwatch is in for the most part it's not going to really be much of an advantage but why didn't consider was the alternative methods of communicating with the user and got me thinking all the other manufacturers have put a vibrating device just that when you got mobile phone in a smart and a smartwatch this obvious thing to add obviously consumes power bad thing but you know vibration on the wrist you proper get away with it being with less vibration lower powered vibrating device because it's directly contacting your skin at all times and it got me thinking about phone you take the phone and put my desk now obviously depending on the kind desk it is my/our destiny here and vibrate mind you the people you all around you and he had vibrate to is goes measured on the Neo and the sound effects guided anyway yet you know the sound it makes rain and spilled into enactment since the days of pages and are having pager races and stuff that I have obtained little things and so you is not a new thing but the point is that if it's in your pocket I often don't feel it vibrating because I'll be leaning forward and if my shirt is leaning forward to my breast pocket it's not actually in contact with my skin and it's got the entire front section of my shirt to insulates the rest of my body from the vibrations of the phone so I physically don't feel it but a watch is always connected to your wrist released 200 is that being the case the utility is that you can have a lower powered vibration device and it will be far more effective than us will develop and smother manufacturers of smartwatch manufacturers have done what Apple say they've done and the effectiveness of this is something that obviously on the cone until I tried other people I can until they try you is not publicly available but during the demo arm the ex-Adobe guy Kevin Kevin Lynch I think I forget his name the guy from Adobe and I was remembering the interviewer just deposited with them about flash and any jump ship Apple and the air was fun to watch a lot now for my best friend anyway funny how that works so one would have happened to Brandon to company loyalty anyway okay so he's a dangers with the company changes of who pays your paycheck is not funny how that works here so he said that when you're navigating in maps it has two distinctly different tapping sensations and he called them tapping sensations not vibrating sensations so that tactic engine that they've come up with this press to give you feedback for turning the digital crown force touching certain things as well as navigating evidence simply different feeling the anyway get that with a standard vibrating device with a rotating vibrating device and off centre vibrating weight which I currently use wild is much different ones with the general idea is that all you can do is vary arm how long vibrates for any deposits ago Rupert Ripley ago grew by that you know you have custom like Morse code in the Dada targeted a data director change in the direction it rotates would make any significant difference would are no so ultimately you're stuck with a single method of indication and if it is drawn out in time then as your body becomes aware of the vibration it you don't have to concentrate on in and listen listen through your nerve endings I guess that makes any sense arm you have to feel over a period of time whereas if you've got a tap sensations in different Sensation either a different physical location on your wrist and I suspect it is our or its somehow a different intensity or it's a very rapid tap versus tap was only I don't know what is no one I think knows what it is yet at least outside of Apple but if it is truly unique and it is the improvement on the vibrating device then that's perfect because that's just what you want you want a new method of communicating discrete information without having to look at the damn thing says vibrating aphids fight phones vibrating in your pocket assuming that you can feel it you you can set up to have different vibrating patterns for different callers call groups in Sinai I believe from memory I haven't done that lovely fishery can now if you do that with the watch that it be awesome because now I have a new method of communicating and that's the power of this thing is that indication because it'll it has an advantage over the over the financing a phone can't do because it's non-contact with your skin so you're stuck with a traditional vibrating mechanism and the restrictions that come with that so I see that is a big step forward because that's as much about the user interface as the screenings so the screen however let's face it it's tiny you know and I'm a bit of it to do about the digital crown and is great for zooming and selecting things in a list but honestly that's it is really not much good for much else in a year is it revolutionary mouse different relatives revolutionary remains to be seen IRC more excited about the tactic engine that I am about the dam dial because honestly yes you have to overcome the issue of pensions and how it is in a touchscreen know the truth is that you can still flick with your finger they showed flicking gestures in ice are partners in functionality that looks at is nothing else that is dependent upon the digital crown in order to function so that being the case is still stuck with a touch interface for a lot of what you want to do an asset and that's fine obviously what you expect now forced tapping is a good addition in terms of input method but the problem with force tapping is that it's our it's a one forceful no for solution to either your tapping oil force tapping because you try teaching someone multiple levels of force you know as a vary from person to person year it's very hard to learn and when I DO waste play panel time arm and back and I played regularly are building a finger strength and when you're playing a grand piano is the open part of the open improving because you have to improve your dynamic control so how hard you hit those keys you owe obviously is it depends on how what the composer wanted when they wrote the song so you have to control how hardy those keys and it takes years and years of practice and I'm not suggesting that I got that good at it I'm actively didn't but you know what is okay arm my point is that when it comes to force tapping on what you really are only going to have one force idea push and are hardly not just imagine if you would how infuriating it would be if you had to care if there was a middle point might not tapping not forced tapping but somewhere in between and when you get angry and upset wise networking is going tap harder and you completely go past that middle force level you straight to hard-hitting like why aren't you tapping you damn you whatever your soccer work well it's it's as nuanced as the difference between whispering and yelling and the whole region between and trying to find the perfect dB exactly you couldn't agree more and and this is the problem with force tapping is that Jamie wrong it's a great addition but it's a dead end it's not get any further than that so you're not gonna find the next are at what has 10 special grades of force tapping something now tipped to be consistent it's can be pretty binary you has to be so young that still good and I can see that making its way into the iPhone at some point in the future absolutely I can however for the moment this is the watch and assess WAP does things right the latter feature like the retina screens counted one by a model of the MacBook Pro iron out the bugs early adopters the guinea pigs go earlier debtors as Elliott perfected the health or spread it out exactly that's only a matter of time retina MacBook Air on our here anyway okay so the thing is that the improvements in the Apple Watch that I see in terms of notifications are more significant than in the input direction so you get more improvement from notifications anyone from input if you've got a big response that you gonna type out arm to a message you can do it on the watch it is not EA only can you imagine using the digital crown to scroll through 26 letters of the alphabet and select each letter one by one general can I do that I be like surgeon on the Apple TV you were because what you do a minute you've only got one axis of rotation because on Apple TV remote you've got arm two axes got up down left right to 2 axes of movement so they can do it is agreed well you say agreed smaller jumble of letters but you know you can do it you do that you can't do that with a single dial in this course you want to scroll across tap a button tap tap the Crown in scroll again tapping would encounter it's just messy messy messy immediately when I could come up with is if you're the iPhone on-screen keyboard and you press and hold a letter your finger skewers the lead on the keyboard that's fine Apple thought of that little pop-up comes up showing you that letter to the go you got letter fantastic again you could do the same thing on a watch if the accuracy of the touch point was was was good enough so you could drag your finger around the keyboard to find the letter that she wanted and/or forced force tap force press on it at that point to select that letter is how I do it will not that's the way that I do I don't know but longer term if it ever gonna become a standalone device evidences are yet stellar to an iPhone is dead endnotes non-smoker beer that sucks you know where when I put a GPS in this thing and I put a better Wi-Fi radio Cisco BG and apparently when they put cellular in it which eventually they will do it's only a matter of time or when all of that happens how we can get text into this thing the attic I was something I just can't see the watch for ever being an accessory that requires an iPhone I just can't get here evolved in well would eventually have serious limitations get a lot better on AIC so they could go that rout if you say so in the problem that I'm sorry I've that has not been my experience I mean my experience is I didn't see it was good as it is getting better yet why mean there but if I ask for directions to the flower shop it asks if, by flowerpot in a cycle no arm is not good enough arm and besides which the problem with with four voice interaction that there is doesn't apply to public places you bad enough talking iPhone in a public place that you know and when you got Seery with race to talk for example the raisins era psycho phone call that socially acceptable but yelling out to a phone on speaker is pretty much a no-no in civilised society arm the aids frowned upon you because you know and hear both sides of a combination conversation is bad enough hearing one side when someone is talking iPhone of the area when you do hold the watch up. You know so you're talking your phone when you're talking to the phone you're talking to Seery same problem the voice recognition still no face lots of problems and besides which you it's improved NIOSH sure that's because the iPhone is running a eight Chevrolet seven ship the 64 bit as good a heck of a lot more RAM on guarantee you for battery life reasons for loan that the watch is a long way off that kind of power probably the same, timeframe from B6 seven years off so I just can't see it happening I can see in becoming standalone device in the future but if it's going to do that the AI needs to become exceptionally good they have to lie in order to provide When espousing messages it or it needs to have its own ability to enter infant enter textual input and whether through Seery or some future equivalent of Seery order that's through arm a keyboard mechanism like the one described you use the digital crown I cut arm is going to slow and honestly I can see it happening that there is a long way to go in this generation one product has been released yet but honestly what I have so far has inspired me to think that this actually could be beneficial as the longest time I saw Ross monitor saying is no point but if I can communicate discreetly was someone with and with no vibration and go tap tap and they get that tap that subtle and that's different and that is an extension of notifications if I then marry that up with I raise my my wrist look at the time and it shows me the notification from that person and I can just flick through them and I will respond quickly I can tap on it and say yes no maybe Bob's your uncle whatever we hope of your uncle my auntie the point is that if you do flick through all those then that sort of that those glances they talk about that's exactly what you want the key is having sensible data you save Apple vinaigrette well then it can work otherwise it is an expensive watch of the city battery NASA truth so you know I guess the answer is watch this time and space because if you don't if you look at it as a this is all it's going to be you miss the point obviously is can evolve and I doubt very much that can evolve any more quickly than the iPhone's like I can imagine that maybe next year I have a slightly different case may be your different bands something or subtle tweaks here and there may be a PS2 chip maybe with a few tweaks near may be slightly faster maybe a slightly bigger battery not much else to it you can get wholesale features and is similar every two years because the big investment for people you can't tie to a phone plan which makes the whole phone replacement thing every year or two palatable about how to sell as their finding with the iPad a much harder sell with the watch upgrades so you're saying is first Jenny should wait you well obviously didn't go first in iPhone and I did I don't think it makes me a sucker just makes me early adopter because I love the new technology yet but I am very very optimistic now I think that's the thing though you you've got a buyer for that reason I think ultimately no arm Apple have had the right approach and perhaps the best approach year are if you look at some of the other ones that matter alters the android where stuff you know I think that is approach is better however a lot of it comes down to the execution and I can't tell that until it's been done but I'm very optimistic particularly about the tactic engine and I'm curious to see how they progress with software updates in time are to do with text input and assets I hope that's that that's clarified a bunch of people's misconceptions about what Apple should have done and frankly not just Apple but the other other manufacturers of smart watches why they I think they've done what they've done and honestly yeah I think that some there's a lot of hope and promise for the future of this but no again watch this watch this space it's going to improve with time don't write off just yet did everything else that you wonder quickly and now I think that pretty much covers cool and is really good to see what what they do with it and how it plays out I absolutely a meeting and I think that I think that it's going to be whatever really offers is in a very inverted forest is as interface and stuff like that we've got a good idea what the hardwoods can offer a lake to see what they do with the disparity in a basin of things you're talking about any application they put on it and I don't mean application justness in the sense of an app that any application they put on it there can have to get really creative with that DUI in the interaction with it and just really experiment without it and find out what works best and addressed Apple to do that best absolutely riding well if you like to talk more about this you can reach me on Twitter and John GG that's JH NCH ID GYN and check out my writing attack API can touch and Vic are you can be reached on Twitter at Vic Hudson one that the ICH UDS ON and the number one are if it likes any feedback please use the feedback from the website and yes I swear it's working now are stupid and next redirects grumble grumble unless we also find show notes after this episode under pod casts pragmatic invalid pragmatic show on Twitter to see show announcements and other related materials like when the broadcasting live if you want to join in and recently hope that you do a special thank you to everyone in the chat room after joining us today and down yes also big thank you to our sponsors of course are we have our life X and Dale if you're looking for an awesome LED light bulbs remotely controllable colourful energy-efficient and really fun to use remember to specifically visit this URL life expelled LIF and use the coupon code pragmatic 2420% off the total price of your order that's a really good deal get what you can I also like that matrix for sponsoring pragmatic and if you live as a Mac software that can be many tricks remember 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Vic Hudson

Vic Hudson

Vic is the host of the App Story Podcast and is the developer behind Money Pilot for iOS.

John Chidgey

John Chidgey

John is an Electrical, Instrumentation and Control Systems Engineer, programmer, podcaster and runs TechDistortion and the Engineered Network. John has produced and appeared on many podcasts as well as Pragmatic.