Dimensions
Size comparison
X3A3
| X3 | A3 | Difference | |
|---|---|---|---|
| Case size | 53.8 mm | 45.2 mm | +8.6 mm |
| Thickness | 13.5 mm | 11.6 mm | +1.9 mm |
| Weight | 95 g | 45 g | +50 g |
Drawn to the same scale from the official dimensions (front and side).
Why is X3 better than A3?
- Water resistance5 ATM vs 2 ATM2.5×
- Battery capacity900 mAh vs 300 mAh3×
- Screen size1.73″ vs 1.39″+24%
- Resolution (width)466 px vs 360 px+29%
Why is A3 better than X3?
- Weight94.6 g vs 45 g2.1×
- Thickness13.5 mm vs 11.6 mm+16%
Specifications
Side by side
| Design & durability | ||
| Case size | 54 mm | 45 mm |
| Weight | 94.6 g | 45 g |
| Thickness | 13.5 mm | 11.6 mm |
| Height | 53.8 mm | — |
| Width | 53.8 mm | — |
| Water resistance | 5 ATM | 2 ATM |
| Colours | Black | — |
| Display | ||
| Screen size | 1.73″ | 1.39″ |
| Display technology | LCD | — |
| Panel | TFT LCD | — |
| AMOLED / OLED display | No | — |
| Resolution (width) | 466 px | 360 px |
| Resolution (height) | 466 px | 360 px |
| Pixel density | 381 ppi | — |
| Refresh rate | 60 Hz | — |
| Battery | ||
| Battery life (smartwatch mode) | — | 8 days |
| Battery capacity | 900 mAh | 300 mAh |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| Sleep tracking | — | Yes |
| Sensors | Accelerometer, heart rate, SpO2, barometer, compass | — |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Connectivity | ||
| NFC payments | No | — |
| LTE (cellular) | No | — |
| eSIM | No | — |
| Bluetooth | 5.3 | — |
| Smart features | ||
| Calls from the wrist | — | Yes |
| Speaker | Yes | — |
| Platform | ||
| Operating system | Proprietary OS | — |
| Platform | Proprietary | — |
| Works with | — | Android, iOS |
