Smart Watch Bracelet True Rate Blood Oxygen

Product information:

Case: ABS+PC plastic case with oil spray
Watch strap: anti-static silicone watch strap
Display screen: 1.39 "TFT
Resolution: 360 * 360 dpi
Waterproof grade IP67: CPU
Bluetooth: BT5.2
Battery capacity: 220mA
Operating system: Android 5.0 and above/iOS 9.0 and above