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Dimensions
Size comparison
Versa 4R8851112001
| Versa 4 | R8851112001 | Difference | |
|---|---|---|---|
| Case size | 40.5 mm | 45 mm | −4.5 mm |
| Thickness | 11.2 mm | 13.3 mm | −2.1 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Versa 4 better than R8851112001?
- AMOLED / OLED displayYes · R8851112001: No
- Thickness11.2 mm vs 13.3 mm+19%
Why is R8851112001 better than Versa 4?
R8851112001 has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Case size | 40 mm | 45 mm |
| Weight | — | 150 g |
| Thickness | 11.2 mm | 13.3 mm |
| Height | 40.5 mm | — |
| Width | 40.5 mm | — |
| Case material | Aluminium | Stainless steel |
| Lens / cover glass | — | Mineralglas |
| Strap material | Silikon | Leder |
| Water resistance | — | 3 ATM |
| Water rating (maker) | — | 3 ATM |
| Colours | — | Black, Silver |
| Display | ||
| Display technology | AMOLED | — |
| Panel | AMOLED | — |
| AMOLED / OLED display | Yes | No |
| Always-on display | Yes | — |
| Touchscreen | Yes | — |
| Battery | ||
| Battery life (smartwatch mode) | 6 days | — |
| Battery type | Li-Po | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | — |
| ECG | Yes | — |
| Skin temperature | Yes | — |
| Sleep tracking | Yes | Yes |
| Sensors | heart rate, accelerometer, ambient light | heart rate |
| Sports & navigation | ||
| Built-in GPS | Yes | — |
| Satellite systems | GPS, GLONASS | — |
| Connectivity | ||
| NFC payments | Yes | — |
| Bluetooth | 5 | — |
| Smart features | ||
| Calls from the wrist | Yes | — |
| Voice assistant | Yes | — |
| Platform | ||
| Operating system | Fitbit OS | — |
| Platform | Proprietary | — |
| Works with | iOS, Android | — |
