Dimensions
Size comparison
Watch 3Watch S3
| Watch 3 | Watch S3 | Difference | |
|---|---|---|---|
| Height | 46.1 mm | 47 mm | −0.9 mm |
| Width | 46.1 mm | 47 mm | −0.9 mm |
| Thickness | 13.8 mm | 12 mm | +1.8 mm |
| Weight | 36 g | 44 g | −8 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Watch 3 better than Watch S3?
- Weight36 g vs 44 g+22%
- Battery capacity505 mAh vs 486 mAh+4%
Why is Watch S3 better than Watch 3?
- Thickness13.8 mm vs 12 mm+15%
Specifications
Side by side
| Design & durability | ||
| Case size | 46 mm | 47 mm |
| Weight | 36 g | 44 g |
| Thickness | 13.8 mm | 12 mm |
| Height | 46.1 mm | 47 mm |
| Width | 46.1 mm | 47 mm |
| Case material | — | Aluminium |
| Lens / cover glass | — | Scratch/drop-proof glass |
| Strap material | — | Fluorelastomer |
| Water resistance | 5 ATM | 5 ATM |
| Water rating (maker) | — | 50 m / 5 bar / 5 ATM |
| Colours | Black, Silver | Black, Silver, Brown |
| Display | ||
| Screen size | 1.43″ | 1.43″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Touchscreen | — | Yes |
| Resolution (width) | 466 px | 466 px |
| Resolution (height) | 466 px | 466 px |
| Pixel density | 326 ppi | 326 ppi |
| Peak brightness | — | 600 nits |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery life (smartwatch mode) | — | 12 days |
| Battery capacity | 505 mAh | 486 mAh |
| Battery type | — | Li-Po |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | Yes | Yes |
| Sensors | Accelerometer, gyro, heart rate, barometer, compass, altimeter, SpO2 | Accelerometer, gyro, compass, barometer, heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | — | Yes |
| Satellite systems | GLONASS, GALILEO, BDS, QZSS | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Connectivity | ||
| NFC payments | Yes | Yes |
| LTE (cellular) | Yes | Yes |
| eSIM | Yes | Yes |
| Bluetooth | 5.2 | 5.2 |
| Smart features | ||
| Speaker | Yes | Yes |
| Storage | 4 GB | — |
| RAM | 0.1 GB | — |
| Platform | ||
| Operating system | Blue OS | HyperOS |
| Platform | Proprietary | Proprietary |
| Works with | — | iOS, Android |
