Why is Helio Core better than Fit 21?
- Thickness9.6 mm vs 12 mm+25%
- Battery capacity232 mAh vs 220 mAh+5%
Why is Fit 21 better than Helio Core?
Fit 21 has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Weight | 11.2 g | — |
| Thickness | 9.6 mm | 12 mm |
| Height | 24.3 mm | — |
| Width | 33.9 mm | — |
| Case material | Plastic / polymer | — |
| Water resistance | 5 ATM | — |
| Water rating (maker) | — | 1 m |
| Colours | — | Black |
| Display | ||
| Screen size | — | 1.54″ |
| Display technology | No display | — |
| Panel | — | Farbdisplay |
| AMOLED / OLED display | — | No |
| Resolution (width) | — | 240 px |
| Resolution (height) | — | 240 px |
| Battery | ||
| Battery life (smartwatch mode) | 10 days | — |
| Battery capacity | 232 mAh | 220 mAh |
| Battery type | — | Li-Ion |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| ECG | — | Yes |
| Sleep tracking | — | Yes |
| Sensors | — | heart rate, accelerometer |
| Sports & navigation | ||
| Built-in GPS | No | — |
| Connectivity | ||
| Bluetooth | 5.2 | 5 |
| Platform | ||
| Platform | Proprietary | — |
| Works with | iOS, Android | iOS, Android |
