"On Tuesday, the first day I set up my Garmin Vivoactive ($249), I assumed I'd be recharging it come Friday afternoon. I had plans for this mighty little wristwatch activity tracker, after all. I would use its built-in GPS to record outdoor runs, let it monitor my tossing and turning each night while I slept, and feel its vibrations every time it received a notification from my smartphone. It also vibrated every so often to remind me to move. Between all those functions, plus checking the weather on the watch frequently and asking it to locate my phone, I was downright amazed, come Monday morning, when the Garmin Vivoactive$174.93 at Amazon still had 40 percent of its battery power remaining."
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