The Fitbit Flex may have been superseded by the Fitbit Charge duo and the Fitbit Surge, but the budget-friendly Flex is bound to still be a big seller for Christmas 2014 and well into 2015.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 upgraded its basic Flex band with water resistance for swim-tracking, but its step counts require manual tweaking to achieve accurate automatic exercise-tracking. The Flex 2’s headlining ...

We had to wait a while, but we finally got ourselves a waterproof Fitbit. In fact, there are now a bunch of Fitbits that can survive a dip in the pool and the sea. The Fitbit Flex 2 was the first to ...