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 ...
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