9.0Display7.9
Dimensions
Size comparison
FW66 Iron RHalo
| FW66 Iron R | Halo | Difference | |
|---|---|---|---|
| Case size | 45 mm | 42 mm | +3 mm |
| Thickness | 11 mm | 10 mm | +1 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is FW66 Iron R better than Halo?
- Battery life (smartwatch mode)14 days vs 7 days2×
Why is Halo better than FW66 Iron R?
- Thickness11 mm vs 10 mm+10%
Specifications
Side by side
| Design & durability | ||
| Case size | 45 mm | 42 mm |
| Weight | 56 g | — |
| Thickness | 11 mm | 10 mm |
| Height | 51 mm | — |
| Width | 45 mm | — |
| Lens / cover glass | 2.5D-Glas Kristallglas | — |
| Strap material | Edelstahl, Silikon | Leder |
| Colours | Black | — |
| Display | ||
| Screen size | 1.43″ | 1.43″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | — | Yes |
| Resolution (width) | 466 px | 466 px |
| Resolution (height) | 466 px | 466 px |
| Battery | ||
| Battery life (smartwatch mode) | 14 days | 7 days |
| Battery capacity | 300 mAh | 300 mAh |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | — |
| Sleep tracking | Yes | — |
| Sensors | heart rate, SpO2 | — |
| Connectivity | ||
| LTE (cellular) | No | — |
| Bluetooth | — | 5.3 |
| Smart features | ||
| Music on the watch | Yes | — |
| Storage | 128 GB | — |
| Platform | ||
| Chipset | RTL8763E | — |
