I’ve been interested in personal fitness trackers for some time and had looked at the available options. I nearly bought a Nike FuelBand two years ago, but its activity tracking was tied to the Nike ...

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 ...