Fitbit Charge 2 Heart Rate + Fitness Wristband
Fitbit will not provide warranty on international version products sold in US
PurePulse continuous, automatic wrist-based heart rate tracking to better measure calorie burn all day
Maximize your workouts using simplified heart rate zones (Fat Burn, Cardio and Peak)
See call, text & calendar notifications on the OLED display; Automatically track how long and how well you sleep and wake with a silent vibrating alarm