Fitbit dives into all-day heart-rate tracking with its new Charge HR and Surge, but you'll have to wait until early 2015 to buy them. We went wrists-on.
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All-day heart-rate tracking, plus a smartwatch with GPS -- take a look at Fitbit's products coming out this year and next.
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Leaked marketing materials show that Fitbit has a fitness-focused $250 smartwatch on the way, with GPS and continuous heart-rate monitoring.