Why is FW51 better than Pro 5?
- Battery life (smartwatch mode)7 days vs 3 days2.3×
Why is Pro 5 better than FW51?
- AMOLED / OLED displayNo · FW51: Yes
- Screen size1.09″ vs 1.43″+31%
Specifications
Side by side
| Design & durability | ||
| Weight | — | 44 g |
| Lens / cover glass | — | Gorilla Glas |
| Water resistance | — | 5 ATM |
| Water rating (maker) | — | 50 m / 5 bar / 5 ATM |
| Colours | Black | — |
| Display | ||
| Screen size | 1.09″ | 1.43″ |
| Display technology | — | AMOLED |
| Panel | IPS | AMOLED |
| AMOLED / OLED display | No | Yes |
| Always-on display | — | Yes |
| Touchscreen | Yes | — |
| Resolution (width) | 240 px | — |
| Resolution (height) | 240 px | — |
| Battery | ||
| Battery life (smartwatch mode) | 7 days | 3 days |
| Battery capacity | 130 mAh | — |
| Battery type | Li-Po | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| Skin temperature | — | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | heart rate, SpO2 | heart rate, SpO2, temperature, barometer, accelerometer |
| Sports & navigation | ||
| Built-in GPS | — | Yes |
| Satellite systems | — | GPS, GLONASS, BDS |
| Barometric altimeter | — | Yes |
| Connectivity | ||
| NFC payments | — | Yes |
| Wi-Fi | — | Wi-Fi 1 |
| Smart features | ||
| Music on the watch | — | Yes |
| Storage | — | 32 GB |
| Platform | ||
| Operating system | — | Wear OS by Google |
| Platform | — | Wear OS |
| Works with | — | Android |
| Chipset | Realtek RTK8762DK | — |
