Haylou RS4 Smart Watch Specification
| Basic Information | Display | 1.78″ (368 x 448) AMOLED display |
| Battery | Battery capacity: 230 mAh About 12 days |
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| Connectivity | Bluetooth V5.1 | |
| OS | Android 6.0 and above, iOS 11.0 and above. Supported functions will vary with different watches, mobile phones, and countries. | |
| Sensor | Heart rate sensor, motion sensor, blood oxygen sensor | |
| Exterior | Dimension | 45.2 x 37.2 x 11.1mm Strap width: 20mm |
| Weight | Watch weight 48.6g (with strap) | |
| Color | Black |
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