vs
4.6Display4.0
5.5Health tracking5.5
Why is Fit Touch 3 better than Fit 21?
- Screen size1.83″ vs 1.54″+19%
- Battery capacity230 mAh vs 220 mAh+5%
Why is Fit 21 better than Fit Touch 3?
Fit 21 has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Weight | 48 g | — |
| Thickness | — | 12 mm |
| Case material | Aluminium | — |
| Water rating (maker) | — | 1 m |
| Colours | Black | Black |
| Display | ||
| Screen size | 1.83″ | 1.54″ |
| Display technology | LCD | — |
| Panel | TFT | Farbdisplay |
| AMOLED / OLED display | No | No |
| Touchscreen | Yes | — |
| Resolution (width) | — | 240 px |
| Resolution (height) | — | 240 px |
| Battery | ||
| Battery capacity | 230 mAh | 220 mAh |
| Battery type | Li-Po | Li-Ion |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | — |
| ECG | — | Yes |
| Sleep tracking | — | Yes |
| Sensors | heart rate, SpO2, accelerometer | heart rate, accelerometer |
| Connectivity | ||
| Bluetooth | 5.1 | 5 |
| Platform | ||
| Works with | iOS, Android | iOS, Android |
