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Why don't smart watches use USB-C to recharge?

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  • Liking that! Pros and cons? I'm pretty damned rough on my gear, why I almost exclusively wear Casio. Water is a serious concern for me.

    Pros? It is cheap, it uses USB-C, step counter and heart monitor work, bluetooth calls work.

    Cons? App is a bit crap, but works with GadgetBridge. UI is a bit slow and janky. Lots of watch faces but you can't design your own.

    Full review on my blog later today.

  • USB C does not require all applications use all aspects available in the current spec (USB 3), that’s just silly. Take the latest iPhone for example (not the pro series,) they are all essentially running USB 2 through a USB C cable. And that’s perfectly fine.

    The real problem is when a company uses USB C but follows none of the wiring or standards requirements for any standard. Such as running power over data pins making the charger some proprietary Frankenstein of bullshit.

    cough cough Nintendo cough cough

  • That gives me no information. What's the battery size? I've had multiple smartwatches and all their batteries could last a week or a day depending on usage, setup and features.

    The point is USB C is noticeably larger than pogo pins for the sake of including a whole bunch of additional pins a smartwatch has zero use for. Larger means less room for other stuff. The ideal state for a smartwatch is having an always-on display and heart rate monitoring, among other things. All watches out there, even the most efficient ones, could use more battery and efficiency than they have. Because all smartwatches are coming up short from their desired usage and are working around their limited battery life.

    The idea of making that worse for the sake of having a clearly unfit for purpose connector as opposed to standardizing a connector that actually does the job is really weird. There is no need to have a different charger on every watch, but there certainly isn't a need to sacrifice any functionality or performance at all for the sake of USB C. And not all watches are the same size, so this would impact smaller watches more, which now is limiting what type of watches you can make if you make USB C a standard. And if it's not a standard, then it's not fixing the problem.

    And all that's even before you begin to consider that watches are more comfortable to charge when they have a stand to do so, since they're small, light and fiddly, so it's entirely possible for a bulky USB C cable meant for fast charging to be heavier than them or stiff enough to actively move them around. There's a reason watch chargers tend to come with very thin, flexible wires. All you need to fix this problem is a magnetic stand that can hold any watch. Half the USB C cables I own would knock over my watch stand if plugged into my watch or drag my watch across the table.

    You can make a watch that charges via USB C and still works. That's not an optimal solution, but you can. But it's not a valid standard because you can't very practically make all watches charge via USB C. Standards need to be standard.

    What’s the battery size?

    The website claims 280mAh. That's a smaller than the newest Pixel watches - but then it is only about 10% of the cost of those models.

    The point is USB C is noticeably larger than pogo pins for the sake of including a whole bunch of additional pins a smartwatch has zero use for.

    Agreed! But that rather depends on what you want to use it for. This model is charge only. But it could be useful to use it as a USB drive to store music, or to get health data off it. The main advantage for my personal use-case is being able to charge while wearing it.

    The ideal state for a smartwatch is having an always-on display and heart rate monitoring, among other things.

    Yes! This does have always-on heart rate monitoring and step count. The screen is only on when you glance at it or tap the button.

    And if it’s not a standard, then it’s not fixing the problem.

    Agreed! But as the Pixel watch has gone through three different charging standards, all of which are incompatible with other watches, we don't seem to be any closer to solving that problem with wireless.

    And all that’s even before you begin to consider that watches are more comfortable to charge when they have a stand to do so, since they’re small, light and fiddly

    That's a personal preference. My Pixel watch stand is fiddly to use - the magnets don't always align. And the puck charger is pretty lightweight and moves around easily. By contrast, my lightweight USB-C cables don't move my watch when it is charging directly.

    Standards need to be standard.

    I agree! But sometimes it is nice to experiment with things to see what works. And I'm very happy that this normal-sized watch is able to charge with the same cable I use for my toothbrush, eBook, headphones, fan, and phone.

  • 4x the volume

    16 times the detail

  • I can't imagine how filthy the port would get on mine. Industrial work plates and open ports are not conductive to the healthy life of electronics.

    Btw, using fiddly electronics in a work environment is neither.

  • A switch mode LED driver can be made very tiny with as few as 4 components. Battery protection and a single cell battery charger can also be very simple.

    Then again my flashlight has a microcontroller with open source firmware on it

  • Get a BangleJS2; it's þe spiritual successor to Pebble, and it's better in many ways.

    It's not e-ink though, which was one of the defining features of a Pebble (and why the battery life was so good). Also, the Pebble guy is back with some new Pebbles: https://repebble.com/

  • What’s the battery size?

    The website claims 280mAh. That's a smaller than the newest Pixel watches - but then it is only about 10% of the cost of those models.

    The point is USB C is noticeably larger than pogo pins for the sake of including a whole bunch of additional pins a smartwatch has zero use for.

    Agreed! But that rather depends on what you want to use it for. This model is charge only. But it could be useful to use it as a USB drive to store music, or to get health data off it. The main advantage for my personal use-case is being able to charge while wearing it.

    The ideal state for a smartwatch is having an always-on display and heart rate monitoring, among other things.

    Yes! This does have always-on heart rate monitoring and step count. The screen is only on when you glance at it or tap the button.

    And if it’s not a standard, then it’s not fixing the problem.

    Agreed! But as the Pixel watch has gone through three different charging standards, all of which are incompatible with other watches, we don't seem to be any closer to solving that problem with wireless.

    And all that’s even before you begin to consider that watches are more comfortable to charge when they have a stand to do so, since they’re small, light and fiddly

    That's a personal preference. My Pixel watch stand is fiddly to use - the magnets don't always align. And the puck charger is pretty lightweight and moves around easily. By contrast, my lightweight USB-C cables don't move my watch when it is charging directly.

    Standards need to be standard.

    I agree! But sometimes it is nice to experiment with things to see what works. And I'm very happy that this normal-sized watch is able to charge with the same cable I use for my toothbrush, eBook, headphones, fan, and phone.

    Hold on, so now you want to use USB C for data transfer? Which means you want to what? add more storage to the watch? That sure seems like a solution looking for a problem you're only floating as a result of choosing USB as the charge port, which we probably shouldn't do.

    And that's not just much less battery than on the Pixel at 420mAh, it's even smaller than the CMF Watch 2, which reports 305mAh and is only seventy bucks (and if anything seems smaller than all of your examples). So yes, there is an impact on battery. And no, that's not acceptable. Because again, ALL smartwatches need more battery than they currently have.

    The point of the always on HR monitoring and screen isn't that they exist, it's that they are a massive battery drain. A smartwatch where you turn those off will last several times more than the same watch with them on, particularly on entry-level devices like ones you point at. And you would ideally wnat those on in a perfect smartwatch while still getting multi-day battery life. Right now we just don't have that because you can't work your way around physics.

    Now, for an experiment? Sure, go nuts. Put a solar panel in there. A hand crank. Who cares, weird hardware is weird and weird is fun.

    But to solve the problem with the ever-changing charger standards from the mainstream manufacturers weird won't cut it. You need a solution that fits all cases with near-optimal performance. USB is just not it for this form factor, and if anything focusing on it distracts from the very real need to come to a proper standard in this space, which I find somewhat annoying.

  • Some watches already have USB - C. but I find it interesting to see if you are correct or not.

    I would see standardizing wireless charging as a decent alternative...if it didnt take up even more space.

    I have the pixel watch 2, and waterproofing is very important to me when it comes to a smartwatch. I work in healthcare and have to wash my hands upwards of 30 times a day. If I had to take off my watch every time or gamble on a rubber flap adequately covering the charging port, it simply would not be worth the hassle.

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    When my latest Fitbit dies, I'll be taking a look at the UNA watch.

    USB-C charging and repairable.

    Image
    Image

    The only thing lacking is some Fediverse presence.

  • It's not e-ink though, which was one of the defining features of a Pebble (and why the battery life was so good). Also, the Pebble guy is back with some new Pebbles: https://repebble.com/

    Pebble isn't eink either. The B&W models use Sharps transflective memory LCDs - part number LS013B7DH01 - and the colour models ones from JDI.

    Epaper is what you are confusing it with, but that's the overall display category. That is the term Pebble used themselves also.

  • It's not e-ink though, which was one of the defining features of a Pebble (and why the battery life was so good). Also, the Pebble guy is back with some new Pebbles: https://repebble.com/

    It's þe same display texhnology. i charge mine about once every 10 days, at around 20%. I can make it two weeks on a charge if I want to risk running þe battery out. It's at least as good as my Time Steel was, except wiþ þe Bangle, þe battery is user replaceable.

    altr

    Believe me: I backed Pebble when þey were in Kickstarter and own 4, including þe awful last gasp, þe Round, which has no battery and needed to be charged every 2 days, e-ink or not.

    Bangle is better. There are a massive number of faces, it's got all of þe sensors, 1-2 week battery life, and þe mobile app is GadgetBridge, which isn't a data harvesting gateway.

  • From listening to a 1hr presentation by a furry in VR chat. Its likely because USB C is bloated. Its to complicated if all you need is power delivery in a small form factor.

    You could use a usb c connector and not comply with the rest of the spec maybe idk shit about electronics.

    You know what you need?
    Mini USB-C! ^/s

  • While it would be lovely if watches could support Qi charging, they are just too small to make it work effectively

    Ha ha ha.

    I can charge my wife's Samsung watch off Qi on my phone. We had to learn how AND do it while on vacation when the Samsung inductive rig for it was left at home.

    Worked like fucking gangbusters.

    This article is shit.

    Didn't know this was a feature so I just tried it and... my watch thinks my phone is "gym equipment" and asks for permission to send my heartrate to it. How do you setup charging?

  • As a current Garmin user I really like a lot of the features of the Garmin but the app for smart watch health tracking is atrocious and some of the values you get are clearly wrong like it recording my resting heart rate at 15 bps lower than it actually is.

    The battery life is still insane which makes things like sleep tracking really nice

    I and my family have had Garmin's like the venu line for years and I am in the hospital all the time. I've tested mine against the polar h10 and multiple medical tests and during times of Hospital stays for lengths of time. Mine has always been accurate and within a beat or two in the heart rate and a single percentage or 2 on pulse ox.

    Garmin has fantastic customer service. Perhaps updating your device, or contacting them for an exchange would be worth while. All their watches I have had, seen, have been accurate. I'm not refuting what your saying just trying to give my perspective.

    You can also set to track every second vs the default smart tracking every few minutes. Switch wrists as everyones vein layouts are better or worse to get a reading, keep it snug but not tight and not loose the sensor shouldnt indent your skin. Hope any of this helps. Don't settle for subpar results or experience. They make good equipment IME.

  • I and my family have had Garmin's like the venu line for years and I am in the hospital all the time. I've tested mine against the polar h10 and multiple medical tests and during times of Hospital stays for lengths of time. Mine has always been accurate and within a beat or two in the heart rate and a single percentage or 2 on pulse ox.

    Garmin has fantastic customer service. Perhaps updating your device, or contacting them for an exchange would be worth while. All their watches I have had, seen, have been accurate. I'm not refuting what your saying just trying to give my perspective.

    You can also set to track every second vs the default smart tracking every few minutes. Switch wrists as everyones vein layouts are better or worse to get a reading, keep it snug but not tight and not loose the sensor shouldnt indent your skin. Hope any of this helps. Don't settle for subpar results or experience. They make good equipment IME.

    I didn’t try actually contacting customer service about it but from talking to other people it has to do with how the watch moves around during exercise that gives the false readings. If I just sit still and compare to a pulse oximeter it stays pretty close but if I am biking or walking around the values change drastically. Then for some reason while when I sit down or lay in bed my heart rate is around 65 it says my resting heart rate is in the 50s

  • When my latest Fitbit dies, I'll be taking a look at the UNA watch.

    USB-C charging and repairable.

    Image
    Image

    The only thing lacking is some Fediverse presence.

    No mention if it is waterproof so i bet it isn't. Modular and waterproof are tough to achieve simultaneously.

    Edit: see below. It does not yet have a waterproof rating but is not currently submersible.

  • No mention if it is waterproof so i bet it isn't. Modular and waterproof are tough to achieve simultaneously.

    Edit: see below. It does not yet have a waterproof rating but is not currently submersible.

    it is explicitly mentioned : IPX8

  • it is explicitly mentioned : IPX8

    Man i looked everywhere for that and didn't see it, sorry.

    I still don't see that rating but i found this:

    waterproof rating tbd but currently not submersible

  • I miss my pebble. It was such a good watch. It would last a week on one charge with eink.

    The power connector was the fiddliest thing in the world and proprietary so when it failed and the batter failed soon after...the watch was dead.

    I'm still using my Amazfit Bip. When new, it could go 6 weeks on a single charge. After about 7 years, I still get about 2 weeks -- enough for me not to bother looking for a replacement.