Fitbit Alta HR $65.40 FREE Shipping
Get the power of continuous heart rate in Fitbit's slimmest design yet-all day, during workouts and beyond
With heart rate, you can better measure calorie burn, and use zones (Fat Burn, Cardio, and Peak) to find the right workout intensity for your goals.
With sleep stages powered by PurePulse heart rate, automatically track your time spent in light, deep and REM sleep and take steps toward a better night's rest.
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