Dimensions
Size comparison
Watch SEWatch 3
| Watch SE | Watch 3 | Difference | |
|---|---|---|---|
| Height | 43 mm | 46.1 mm | −3.1 mm |
| Width | 37 mm | 46.1 mm | −9.1 mm |
| Thickness | 11.7 mm | 13.8 mm | −2.1 mm |
| Weight | 31 g | 36 g | −5 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Watch SE better than Watch 3?
- Screen size1.75″ vs 1.43″+22%
- Storage8 GB vs 4 GB2×
- Weight31 g vs 36 g+16%
- Thickness11.7 mm vs 13.8 mm+18%
Why is Watch 3 better than Watch SE?
- Battery capacity400 mAh vs 505 mAh+26%
- Resolution (width)372 px vs 466 px+25%
Specifications
Side by side
| Design & durability | ||
| Case size | 43 mm | 46 mm |
| Weight | 31 g | 36 g |
| Thickness | 11.7 mm | 13.8 mm |
| Height | 43 mm | 46.1 mm |
| Width | 37 mm | 46.1 mm |
| Water resistance | 5 ATM | 5 ATM |
| Colours | Gray, Purple, Brown | Black, Silver |
| Display | ||
| Screen size | 1.75″ | 1.43″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Resolution (width) | 372 px | 466 px |
| Resolution (height) | 430 px | 466 px |
| Pixel density | 325 ppi | 326 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery capacity | 400 mAh | 505 mAh |
| Battery type | Li-Ion | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | — | Yes |
| Sensors | Accelerometer, gyro, heart rate, compass, barometer, SpO2 | Accelerometer, gyro, heart rate, barometer, compass, altimeter, SpO2 |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Satellite systems | GLONASS, GALILEO, BDS | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Connectivity | ||
| NFC payments | Yes | Yes |
| LTE (cellular) | Yes | Yes |
| eSIM | Yes | Yes |
| Wi-Fi | Wi-Fi 4 | — |
| Bluetooth | 5 | 5.2 |
| Smart features | ||
| Speaker | Yes | Yes |
| Storage | 8 GB | 4 GB |
| RAM | 1 GB | 0.1 GB |
| Platform | ||
| Operating system | ColorOS Watch 3.0 - China | Blue OS |
| Platform | Proprietary | Proprietary |
| Chipset | Qualcomm Snapdragon Wear 4100 | — |
