?Activity Tracker?step counting, calories burning and distance measuring, comprehensively collect your and storage excise data ( for the latest 7 days ), efficiently help you manage your sports activity. ?Heart Rate Monitor?Please note the heart rate data is for your reference, NOT for medical use ?Call and Message Reminder?It will vibrate to alert you if your phone receives a phone call, SMS text and SNS messages including Facebook, Twitter, WhatsApp, Linkedin, Instagram, Messenger, etc ?Other Functions?Sleep monitor, Gesture-sensor control, Anti-lost, Camera remote control, Sedentary reminder, Vibration clock alarm, Multi-language. ?Technical Design?0.49" OLED screen will automatically light up when you turn over hand, 5.5" - 7.6" adjustable silicon band fit for different wrist size, IP65 daily waterproof design.Compatible with Android 4.4 or above, iOS 8 or above,Bluetooth 4.0 or above