Dimensions
Size comparison
Versa 4Watch 3
| Versa 4 | Watch 3 | Difference | |
|---|---|---|---|
| Height | 40.5 mm | 46.1 mm | −5.6 mm |
| Width | 40.5 mm | 46.1 mm | −5.6 mm |
| Thickness | 11.2 mm | 13.8 mm | −2.6 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Versa 4 better than Watch 3?
- Thickness11.2 mm vs 13.8 mm+23%
Why is Watch 3 better than Versa 4?
Watch 3 has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Case size | 40 mm | 46 mm |
| Weight | — | 36 g |
| Thickness | 11.2 mm | 13.8 mm |
| Height | 40.5 mm | 46.1 mm |
| Width | 40.5 mm | 46.1 mm |
| Case material | Aluminium | — |
| Strap material | Silikon | — |
| Water resistance | — | 5 ATM |
| Colours | — | Black, Silver |
| Display | ||
| Screen size | — | 1.43″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | Yes | — |
| Touchscreen | Yes | — |
| Resolution (width) | — | 466 px |
| Resolution (height) | — | 466 px |
| Pixel density | — | 326 ppi |
| Refresh rate | — | 60 Hz |
| Battery | ||
| Battery life (smartwatch mode) | 6 days | — |
| Battery capacity | — | 505 mAh |
| Battery type | Li-Po | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | Yes | Yes |
| Skin temperature | Yes | — |
| Sleep tracking | Yes | — |
| Sensors | heart rate, accelerometer, ambient light | Accelerometer, gyro, heart rate, barometer, compass, altimeter, SpO2 |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Satellite systems | GPS, GLONASS | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | — | Yes |
| Compass | — | Yes |
| Connectivity | ||
| NFC payments | Yes | Yes |
| LTE (cellular) | — | Yes |
| eSIM | — | Yes |
| Bluetooth | 5 | 5.2 |
| Smart features | ||
| Calls from the wrist | Yes | — |
| Speaker | — | Yes |
| Voice assistant | Yes | — |
| Storage | — | 4 GB |
| RAM | — | 0.1 GB |
| Platform | ||
| Operating system | Fitbit OS | Blue OS |
| Platform | Proprietary | Proprietary |
| Works with | iOS, Android | — |
