Why is R9 better than Pro 4?
- Battery capacity670 mAh vs 440 mAh+52%
Why is Pro 4 better than R9?
- Battery life (smartwatch mode)2 days vs 5 days2.5×
- Screen size1.43″ vs 1.56″+9%
- Resolution (width)360 px vs 480 px+33%
Specifications
Side by side
| Design & durability | ||
| Case size | — | 47 mm |
| Thickness | — | 9.9 mm |
| Case material | — | Stainless steel |
| Colours | Black | — |
| Display | ||
| Screen size | 1.43″ | 1.56″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | — | Yes |
| Resolution (width) | 360 px | 480 px |
| Resolution (height) | 360 px | 480 px |
| Battery | ||
| Battery life (smartwatch mode) | 2 days | 5 days |
| Battery capacity | 670 mAh | 440 mAh |
| Battery type | Li-Po | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | — | Yes |
| ECG | — | Yes |
| Skin temperature | — | Yes |
| HRV tracking | — | Yes |
| Sleep tracking | — | Yes |
| Sensors | — | heart rate, SpO2 |
| Connectivity | ||
| LTE (cellular) | Yes | — |
| Bluetooth | — | 5.1 |
| Platform | ||
| Works with | — | iOS, Android |
| Chipset | — | Jieli AC7013A |
