Fitbit Flex Wireless Activity and Sleep Wristband
Wearable personal trainer. The Fitbit Flex Activity Tracker acts like your own personal wearable trainer you always can carry around. It measures your activity level at daytime and monitors your sleep quality at night. That is something a real personal trainer wouldn’t do. Update 2018: Check out the cool Fitbit Ionic. The wristband is supposed to be … Read more