Fitbit Charge 2 Activity Tracker (Large-Black)

The all-newheart rate and fitness wristband. Maximize workouts withPurePulse heart rate, multi-sport modes and ConnectedGPS. Track all-day activity, exercise and sleep. And makethe most of your routine with smartphone notifications,Reminders to Move and guided breathing sessions. Features: Sensors & Components Optical heart rate tracker 3-axis accelerometer Altimeter Vibration motor Battery and Power We recommend charging your device every few days to ensure that you''re always tracking. Battery life up to 5 days. Battery life and charge cycles vary with use, settings, and other factors; actual results will vary. Battery type: Lithium-polymer Charge time: One to two hours Radio transceiver: Bluetooth 4.0 Memory Saves 7 days of detailed motion data – minute by minute Saves daily totals for past 30 days Stores heart rate data at 1 second intervals during exercise tracking and at 5 second intervals all other times What''s Included Fitbit Charge 2 tracker Charge 2 Classic wristband Charging cable Click Here for more detailed specifications.