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(adjusting the stride length can improve the distance measurement accuracy of the device). Smart phone notifications keep you connected to your day and you can tailor your look for any occasion with interchangeable metal, leather and classic bands. By night, Alta HR automatically tracks your sleep and shows your time spent in light, deep and REM sleep. There's more than one way to achieve a healthier lifestyle. Move to the beat of you. Alta HR is the world's slim fitness wristband with continuous heart rate, based on Fitbit research. Syncing range - up to 30 feet.