TypeSmart Bracelet SmartwatchModelK6CPUNRF52832FeaturesCamera Control,Sports,Smart,Waterproof,Blood Pressure Measurement,Calories Burned,Heart Rate Monitor,Long Standby,Touch ScreenFitness & WellnessCall Reminder,Pedometer,Alarm Clock,Sleep Tracker,Activity Tracker,Pulsometer,Sedentary ReminderSensorHeart Rate Sensor*Waterproof LevelIPX-6Screen Size (inch)1.3Size (cm)25.5*3.3*1.1ConnectionBluetoothCompatibilityAndroid iOSSupported Operating SystemsAndroid 4.4 and iOS 8.0 or aboveCapacity (mAh)230Standby Time