Why is Fit 21 better than Fit FW42?
- Battery capacity220 mAh vs 180 mAh+22%
Why is Fit FW42 better than Fit 21?
Fit FW42 has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Thickness | 12 mm | — |
| Case material | — | Stainless steel |
| Water rating (maker) | 1 m | — |
| Colours | Black | — |
| Display | ||
| Screen size | 1.54″ | — |
| Display technology | — | LCD |
| Panel | Farbdisplay | TFT |
| AMOLED / OLED display | No | No |
| Touchscreen | — | Yes |
| Resolution (width) | 240 px | — |
| Resolution (height) | 240 px | — |
| Battery | ||
| Battery life (smartwatch mode) | — | 7 days |
| Battery capacity | 220 mAh | 180 mAh |
| Battery type | Li-Ion | Li-Ion |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| ECG | Yes | — |
| Sleep tracking | Yes | Yes |
| Sensors | heart rate, accelerometer | heart rate |
| Connectivity | ||
| Bluetooth | 5 | 5 |
| Platform | ||
| Works with | iOS, Android | iOS, Android |
