Product Features: 1.28 inch IPS full viewing angle. Easy to replace strap, standard 22mm. Mass dial push, custom dial. Bluetooth call/Bluetooth music (super clear sound quality), weather display. Heart rate detection, blood pressure detection, blood oxygen detection, heart rate detection throughout the day. Time display, step counting, calories, distance, heart rate, blood pressure, blood oxygen, sleep time, power on/off display, stopwatch, multi-sport mode. Sleep monitoring (sleep time, sleep quality). Incoming call notification, message reminder, multi-language push, alarm clock reminder, remote photo taking, sedentary reminderThe bracelet supports multiple languages. 400mAh large battery, long standby time, the screen display is very bright outdoors. Synchronize data to APK/APP. Product parameters: The system requires Android 4.4 and above, IOS 8.0 and above, and supports Bluetooth 5.0. Bluetooth version BLE 5.0. Main control chip Realtek8762C. Memory Flash 64MB. Screen resolution 240*240. Horn 0916. The battery capacity is 400mAh. The standby time is about 30 days. The working time is about 7-15 days. Built-in motor, vibration reminder.