vs
9.5Display8.1
8.6Health tracking5.0
8.0Sports & outdoor4.7
5.4Smart features9.6
Dimensions
Size comparison
Watch D2Watch S4 Sport
| Watch D2 | Watch S4 Sport | Difference | |
|---|---|---|---|
| Height | 48 mm | 46.9 mm | +1.1 mm |
| Width | 38 mm | 46.9 mm | −8.9 mm |
| Thickness | 13.3 mm | 12.6 mm | +0.7 mm |
| Weight | 40 g | 49 g | −9 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Watch D2 better than Watch S4 Sport?
- Screen size1.82″ vs 1.43″+27%
- Weight40 g vs 49 g+23%
- Pixel density347 ppi vs 326 ppi+6%
Why is Watch S4 Sport better than Watch D2?
- LTE (cellular)No · Watch D2: Yes
- eSIMNo · Watch D2: Yes
- Resolution (width)408 px vs 466 px+14%
- Battery capacity524 mAh vs 586 mAh+12%
- Thickness13.3 mm vs 12.6 mm+6%
Specifications
Side by side
| Design & durability | ||
| Case size | 48 mm | 47 mm |
| Weight | 40 g | 49 g |
| Thickness | 13.3 mm | 12.6 mm |
| Height | 48 mm | 46.9 mm |
| Width | 38 mm | 46.9 mm |
| Case material | Aluminium | — |
| Sapphire crystal | — | Yes |
| Lens / cover glass | — | Sapphire crystal glass |
| Water resistance | — | 5 ATM |
| Ingress protection | IP68 | — |
| Water resistance (IPx) | IPx8 | — |
| Colours | Black, Gold | Titanium |
| Display | ||
| Screen size | 1.82″ | 1.43″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Touchscreen | Yes | — |
| Resolution (width) | 408 px | 466 px |
| Resolution (height) | 480 px | 466 px |
| Pixel density | 347 ppi | 326 ppi |
| Peak brightness | — | 2,200 nits |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery life (smartwatch mode) | 6 days | — |
| Battery capacity | 524 mAh | 586 mAh |
| Battery type | Li-Ion | Li-Po |
| Wireless charging | Yes | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | Yes | — |
| Skin temperature | Yes | — |
| Temperature sensor | Yes | — |
| Sleep tracking | Yes | — |
| Sensors | Accelerometer, gyro, heart rate, SpO2, thermometer (skin temperature), differential pressure sensor, barometer | Accelerometer, gyro, compass, barometer, heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | — | Yes |
| Satellite systems | — | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Connectivity | ||
| NFC payments | Yes | Yes |
| LTE (cellular) | No | Yes |
| eSIM | No | Yes |
| Bluetooth | 5.2 | 5.2 |
| Smart features | ||
| Calls from the wrist | Yes | — |
| Speaker | Yes | Yes |
| Music on the watch | Yes | — |
| Storage | — | 32 GB |
| Platform | ||
| Operating system | HarmonyOS 5.0 | HyperOS |
| Platform | HarmonyOS | Proprietary |
| Works with | Android, iOS | — |
