Every beat counts!
Let your heart be your guide with Charge HR. Monitor heart rate automatically and continuously right on your wrist to accurately track calorie burn, maintain workout intensity, maximize training and optimize health—all without an uncomfortable chest strap.
Take control of your goals by using Charge HR to record your workouts and track all-day activity like heart rate, steps, distance, calories burned, floors climbed and active minutes. With instant access to every stat, anywhere you go, you don’t have to look far for motivation to keep moving.
With a comfortable fit and Caller ID, The Charge HR lets you stay connected in style. See incoming call notifications on display when your phone is nearby to stay in the know, on the go.
Get a better picture of your overall health by using Charge HR to automatically track how long and how well you sleep. Sync your nightly stats to see online graphs that illustrate your sleep trends, and wake peacefully by setting a silent, vibrating alarm.
It syncs automatically your data to PCs, Macs, many iOS devices and select Android phones without plugging in or pushing buttons. This gives you real-time access to your stats on the fitbit dashboard throughout the day. Syncing occurs automatically any time the Charge HR is within about 6 meters of the wireless sync dongle and is relatively motionless. The dongle plugs into your Mac or PC's USB port. Show Supported Devices.
The Charge is available in two sizes:
small - for wrists with an extent of 140–165mm
large - for wrists with an extent of 160-193mm