At the CES event in Las Vegas this week, Fitbit unveiled a new Bluetooth Smart-enabled, wrist-worn activity tracker, called Fitbit Flex. Like most of Fitbit's other trackers, the Flex also promises to ...

San Francisco-based Fitbit has commercially launched its first wristworn activity and sleep tracking device, Fitbit Flex, which it first announced at the Consumer Electronics Show in January. Fitbit ...

Fitbit has announced it has improved how sleep tracking works in its wearables. A member of the Fitbit team posted over at the company’s community forums about changes made to sleep tracking. And they ...