vs
9.1Display8.7
Why is R9 better than Pro 4 Ultra eckig?
R9 has no measurable advantages in this pair.
Why is Pro 4 Ultra eckig better than R9?
- Battery life (smartwatch mode)2 days vs 6 days3×
- Screen size1.43″ vs 2.04″+43%
- Battery capacity670 mAh vs 1,400 mAh2.1×
Specifications
Side by side
| Design & durability | ||
| Thickness | — | 10.9 mm |
| Case material | — | Aluminium |
| Colours | Black | — |
| Display | ||
| Screen size | 1.43″ | 2.04″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | — | Yes |
| Resolution (width) | 360 px | — |
| Resolution (height) | 360 px | — |
| Battery | ||
| Battery life (smartwatch mode) | 2 days | 6 days |
| Battery capacity | 670 mAh | 1,400 mAh |
| Battery type | Li-Po | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | — | Yes |
| ECG | — | Yes |
| Skin temperature | — | Yes |
| Sleep tracking | — | Yes |
| Sensors | — | heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | — | Yes |
| Satellite systems | — | GPS |
| Connectivity | ||
| LTE (cellular) | Yes | — |
| Bluetooth | — | 5.3 |
| Platform | ||
| Works with | — | iOS, Android |
