Apple Watch isn't just another screen to tap away at. Rather, it's designed to detach ourselves from our iPhones when we're out in the world and focus a little more on the people in it. It's not the kind of device Apple's going to want people rushing to an outlet to charge, and you can bet its team of engineers has spent the past six months vigorously testing Apple Watch under the most extreme conditions to make sure the experience is as smooth as possible.
And if, each day, you have to plug it in to ensure it lasts through the following day, so be it. For the vast majority of us, a wristwatch is an encumbrance rather than aid when sleeping.
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