* HAYLOU GST Smart Watch
* Bluetooth version: 5.1
* Battery capacity: 220mAh
* System Requirements:
- Android 6.0 and up
- iOS 11.0 and later
* Active operation time up to 7 days (24 hours with heart rate function on)
* Waterproof type IP68.
* Working temperature: 0℃~45℃
* 12 sports modes
* Measurement of heart rate and blood oxygen level.
* Sleep monitoring.
* Body diameter: 45.7*42.6*11.6 (mm)
* Strap size: 22mm
* Display: 1.28 inch TFT display
* Resolution: 240*240