D20 Pro Smart Watch Y68 Bluetooth Fitness Tracker Sports Watch Heart Rate Monito

* Model Number: D20 Pro Smart Watch * APP: FitPro * Bluetooth Version: Bluetooth 4.0 * Waterproof / Water-Resistant: Yes(Not for swimming ) * Operating mode: Touch button * Power on: press and hold the function key * Screen Type: 1.3inch TFT LCD * Storage(FLASH)16MB+128KB * Compatible OS: Android,IOS * Standby time: 4-7days normally use; 30 days standbybased on 230mAh * Functions: Sport,Message,Alarm Clock,Blood Oxygen,Date,Measurement of heart rate,Sedentary reminder,Sleep management,Time * Notification type: Facebook,Twitter,Wechat,WhatsApp * Alert type: Vibration