The Fitbit Flex may have been superseded by the Fitbit Charge duo and the Fitbit Surge, but the budget-friendly Flex is bound to still be a big seller for Christmas 2014 and well into 2015. So if ...
Fitbit let me test its new models—the heart-rate-tracking Charge 2 and the ultra-slim swimproof Flex 2—with an intense interval workout on a scenic San Francisco rooftop last Thursday. And my legs are ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback