Fitbit's Flex is a wireless activity and sleep wristband, which tracks all sorts of different things like the amount of steps you've taken. PRICING: You can find the Fitbit Flex Wireless Activity + Sleep Wristband for sale below. The prices listed are valid at the time of writing, but can change at any time. It also measures your sleep quality and has a silent alarm that vibrates to wake you up - rather than beeping which could wake others. Both a small and large wristband are included to ensure a comfortable fit, as well as a wireless sync dongle and charging cable.
See more of Fitbit Force Wireless Activity + Sleep Wristband on Facebook. Flex wireless activity + sleep wristband. buy now. Learn more. Tracks steps, distance, calories burned and active minutes. Monitor how long and how well you sleep. LED lights show how your day is stacking up against your goal.