| Brand |
Haylou |
| Water Resistance |
1 ATM (rain, sweat, hand wash) |
| Model |
4S |
| Connection Type |
Bluetooth V5.3 |
| Control Button |
2 |
| Compatibility |
Android 9.0 and above , iOS 13.4 and above |
| Weight |
62g (with strap) |
| Display |
1.43-inch | 466 × 466 pixels | AMOLED |
| Sensors |
Heart Rate Monitoring: 24/7 | Blood Oxygen (SpO2) Monitoring |
| Other Features / Info |
Sleep Tracking (deep, light, REM) | Stress Monitoring | Menstrual Cycle Tracking | GPS: 5-system (GPS, BeiDou, GLONASS, Galileo, QZSS) | Vibrator: Yes | 200+ Online Watch Faces | 120+ Sports Modes |
| Battery Life |
400mAh Capacity | up to 18 days |
