About Product 1. Bluetooth version: BT 4.0 2. Battery: 180mAh 3. Charging method: magnetic charging 4. Touch screen: capacitive touch screen 5. Standby time: 20 days 6. 30 meters waterproof Features 1. Heart rate, blood pressure, blood oxygen. 2. Multi-sport mode, basketball, badminton, etc. 3. Pedometer, mileage, calories, sedentary reminder, sleep monitoring Self-timer 4. Support Facebook, WhatsApp and other social software notification information content 5. Altitude, air pressure, ultraviolet light 6. Multi-language