3.1Display4.0
Why is Fit Watch 5910 better than Fit 21?
- Thickness10 mm vs 12 mm+20%
Why is Fit 21 better than Fit Watch 5910?
- Screen size1.3″ vs 1.54″+18%
Specifications
Side by side
| Design & durability | ||
| Weight | 35 g | — |
| Thickness | 10 mm | 12 mm |
| Height | 255 mm | — |
| Width | 37 mm | — |
| Case material | Stainless steel | — |
| Strap material | Kunststoff | — |
| Water rating (maker) | — | 1 m |
| Colours | — | Black |
| Display | ||
| Screen size | 1.3″ | 1.54″ |
| Display technology | LCD | — |
| Panel | LCD | Farbdisplay |
| AMOLED / OLED display | No | No |
| Resolution (width) | — | 240 px |
| Resolution (height) | — | 240 px |
| Battery | ||
| Battery life (smartwatch mode) | 6 days | — |
| Battery capacity | — | 220 mAh |
| Battery type | Li-Po | Li-Ion |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| ECG | — | Yes |
| Sleep tracking | — | Yes |
| Sensors | — | heart rate, accelerometer |
| Sports & navigation | ||
| Built-in GPS | Yes | — |
| Satellite systems | GPS | — |
| Connectivity | ||
| Bluetooth | 5 | 5 |
| Platform | ||
| Works with | iOS, Android | iOS, Android |
