Track all-day activity: Your hard-earned steps, distance, hourly activity, active minutes and calories burned;Automatically track your sleep and set silent alarms that wake you by buzzing on your wrist Enjoy up to 5 days of battery for daily progress without constant charging; Varies with use;Get call, text, calendar and smartphone app notifications right on your wrist; Automatically and conveniently record workouts like walks, swimming and bike rides with smart track Swim proof, so you can feel inspired from the shower to the pool (water resistant to 50M) ; Memory: Saves 7 days of detailed motion data – minute by minute and Saves daily totals for the last 30 days Acknowledge milestones on your journey with on-screen celebrations when you hit your activity goals ; Radio transceiver: Bluetooth 4.0V ; Syncing range: Up to 6 m ; Compatibility: Syncs with iPhone 4S and later, iPad 3 gen. and later, Android 5.0 and later and Windows 10 devices Included Components: 1x Device, 1x Instruction Manual, 1x Extra Strap, 1x Charging Cable; Human Interface Input: Touch Screen