Heart rate tracking The heart of it all—heart rate powers important data like calorie burn, sleep stages, resting heart rate & more. Active Zone Minutes Tracks your time in heart rate zones so you get credit when you work harder.
Heart rate tracking The heart of it all—heart rate powers important data like calorie burn, sleep stages, resting heart rate & more. Active Zone Minutes Tracks your time in heart rate zones so you get credit when you work harder.
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