Dimensions
Size comparison
C28Watch D2
| C28 | Watch D2 | Difference | |
|---|---|---|---|
| Height | 58.3 mm | 48 mm | +10.3 mm |
| Width | 46.1 mm | 38 mm | +8.1 mm |
| Thickness | 13.3 mm | 13.3 mm | = |
| Weight | 44 g | 40 g | +4 g |
Drawn to the same scale from the official dimensions (front and side).
Why is C28 better than Watch D2?
- Screen size2.02″ vs 1.82″+11%
Why is Watch D2 better than C28?
- Built-in GPSNo · C28: Yes
- AMOLED / OLED displayNo · C28: Yes
- NFC paymentsNo · C28: Yes
- Weight44.5 g vs 40 g+11%
- Pixel density250 ppi vs 347 ppi+39%
- Battery capacity410 mAh vs 524 mAh+28%
- Resolution (width)320 px vs 408 px+27%
Specifications
Side by side
| Design & durability | ||
| Case size | 58 mm | 48 mm |
| Weight | 44.5 g | 40 g |
| Thickness | 13.3 mm | 13.3 mm |
| Height | 58.3 mm | 48 mm |
| Width | 46.1 mm | 38 mm |
| Case material | — | Aluminium |
| Water resistance | 1 ATM | — |
| Ingress protection | — | IP68 |
| Water resistance (IPx) | — | IPx8 |
| Colours | Black, Green | Black, Gold |
| Display | ||
| Screen size | 2.02″ | 1.82″ |
| Display technology | LCD | AMOLED |
| Panel | TFT LCD | AMOLED |
| AMOLED / OLED display | No | Yes |
| Touchscreen | — | Yes |
| Resolution (width) | 320 px | 408 px |
| Resolution (height) | 390 px | 480 px |
| Pixel density | 250 ppi | 347 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery life (smartwatch mode) | — | 6 days |
| Battery capacity | 410 mAh | 524 mAh |
| Battery type | — | Li-Ion |
| 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, heart rate, SpO2, blood pressure | Accelerometer, gyro, heart rate, SpO2, thermometer (skin temperature), differential pressure sensor, barometer |
| Sports & navigation | ||
| Built-in GPS | No | Yes |
| Barometric altimeter | — | Yes |
| Compass | — | Yes |
| Connectivity | ||
| NFC payments | No | Yes |
| LTE (cellular) | No | No |
| eSIM | No | No |
| Bluetooth | — | 5.2 |
| Smart features | ||
| Calls from the wrist | — | Yes |
| Speaker | Yes | Yes |
| Music on the watch | — | Yes |
| Platform | ||
| Operating system | Proprietary OS | HarmonyOS 5.0 |
| Platform | Proprietary | HarmonyOS |
| Works with | — | Android, iOS |
