Fitbit Alta HRâ„c Everyone\'s path to health and fitness is different, jumpstart yours with Fitbit Alta HR. Get the power of PurePulse heart rate in a slim, elegant wristband so you can better track calorie burn, gauge your exercise intensity and see your resting heart rate trends. Track all the basics like steps, distance and calories burned and get friendly reminders to move that motivate you to keep stepping and keep track of your workouts with smart track automatic exercise recognition, which gives you credit for being active. Fitbit Alta HRâ„c - Small wrist size - 140mm to 170mm Fitbit Alta HRâ„c features: Automatically track your steps, distance, calories burned and active minutes Get the power of continuous heart rate in the slimmer design on the market-all day, during workouts and beyond Automatically track your sleep and see your time spent in light, deep and REM sleep stages, powered by PurePulse heart rate Stay connected with call, text and calendar notifications on display (when your phone is nearby) With a battery life of up to 7 days, you can worry less about your tracker and focus more on your goals Introducing Fitbit Alta HRâ„c