All these smart watches are crap. Battery tech is not good enough for these devices to be useful. Charging my phone up every few days is bad enough let charging my watch up every day. My current watch is smarter then any of the current smart watches. It requires no batteries and changes the time and date by its self. Even if I go to to another country it will change the time its self to suit.
I always had a Casio F-91W as sometime sported by Osama Bin Laden. I never had a battery die on it, it always tended to get lost after 4 or 5 years so I've no idea how long the battery lasts. The last watch fell apart a few weeks after an adventure in the washer/dryer, although it did still function up until it came apart.
