Fitbit today launched its newest wearable activity tracking device, the Fitbit Flex. The wristband, which originally debuted at CES 2013, counts calories burned, distance walked, and steps taken, along with offering tools to record food intake and sleep quality.
At $100, the Fitbit Flex is more affordable than competing products like the Jawbone UP and the Nike FuelBand, priced at $130 and...