vs
6.6Display9.0
8.0Sports & outdoor8.0
9.0Smart features9.6
8.1Build & durability8.2
Dimensions
Size comparison
Watch SE 2Watch 3
| Watch SE 2 | Watch 3 | Difference | |
|---|---|---|---|
| Height | 44 mm | 43 mm | +1 mm |
| Width | 38 mm | 37 mm | +1 mm |
| Thickness | 10.7 mm | 11.7 mm | −1 mm |
| Weight | 33 g | 32 g | +1 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Watch SE 2 better than Watch 3?
- Thickness10.7 mm vs 11.7 mm+9%
Why is Watch 3 better than Watch SE 2?
- Weight33 g vs 31.9 g+3%
- Battery capacity296 mAh vs 400 mAh+35%
Specifications
Side by side
| Design & durability | ||
| Case size | 44 mm | 43 mm |
| Weight | 33 g | 31.9 g |
| Thickness | 10.7 mm | 11.7 mm |
| Height | 44 mm | 43 mm |
| Width | 38 mm | 37 mm |
| Case material | Aluminium | Aluminium |
| Sapphire crystal | Yes | — |
| Lens / cover glass | Ion-X strengthened glass | — |
| Water resistance | 5 ATM | 5 ATM |
| Colours | Midnight, Starlight, Silver | Black, Gold |
| Display | ||
| Screen size | 1.78″ | 1.75″ |
| Display technology | OLED | AMOLED |
| Panel | Retina LTPO OLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Resolution (width) | 368 px | 372 px |
| Resolution (height) | 448 px | 430 px |
| Pixel density | 326 ppi | 326 ppi |
| Peak brightness | 1,000 nits | — |
| LTPO display | Yes | — |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery capacity | 296 mAh | 400 mAh |
| Battery type | Li-Ion | Li-Ion |
| Wireless charging | Yes | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | — | Yes |
| Sensors | Accelerometer, gyro, heart rate (2nd gen), barometer, always-on altimeter, compass | Accelerometer, gyro, heart rate, compass, barometer, SpO2 |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Satellite systems | GLONASS, GALILEO, QZSS | 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 | 5.3 | 5 |
| Smart features | ||
| Speaker | Yes | Yes |
| Storage | 32 GB | 32 GB |
| RAM | 1 GB | 1 GB |
| Platform | ||
| Operating system | watchOS 9.0 | Android Wear OS - International ColorOS Watch 3.0 - China |
| Platform | watchOS | Android |
| Chipset | Apple S8 | Qualcomm Snapdragon W5+ Gen 1 |
