The Fitbit Flex may have been superseded by the Fitbit Charge duo and the Fitbit Surge, but the budget-friendly Flex is bound to still be a big seller for Christmas 2014 and well into 2015.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 Flex 2: The waterproof tracker is smaller, lighter, and better looking than the old Flex but it’s still got a few issues.” Swimming and automatic activity tracking requires extra steps to ...

The Fitbit Flex 2 is not for athletes or serious gym rats. For those who are casually interested in getting a bit fitter, though, the versatile design, great app and excellent auto-detect feature make ...

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