Why is RS4 Plus better than JR-FV2?
- Screen size1.78″ vs 1.43″+24%
Why is JR-FV2 better than RS4 Plus?
- Battery capacity230 mAh vs 300 mAh+30%
- Resolution (width)368 px vs 466 px+27%
Specifications
Side by side
| Design & durability | ||
| Case size | — | 48 mm |
| Weight | 49 g | — |
| Thickness | 11 mm | — |
| Strap material | Silikon | — |
| Colours | — | Silver |
| Display | ||
| Screen size | 1.78″ | 1.43″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Resolution (width) | 368 px | 466 px |
| Resolution (height) | 448 px | 466 px |
| Battery | ||
| Battery life (smartwatch mode) | — | 12 days |
| Battery capacity | 230 mAh | 300 mAh |
| Battery type | Li-Po | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | — | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | heart rate | heart rate, SpO2 |
| Connectivity | ||
| Bluetooth | 5.1 | — |
| Platform | ||
| Works with | iOS | — |
