Dimensions
Size comparison
C28BT50
| C28 | BT50 | Difference | |
|---|---|---|---|
| Height | 58.3 mm | 51.2 mm | +7.1 mm |
| Width | 46.1 mm | 51.2 mm | −5.1 mm |
| Thickness | 13.3 mm | 13 mm | +0.3 mm |
| Weight | 44 g | 76 g | −32 g |
Drawn to the same scale from the official dimensions (front and side).
Why is C28 better than BT50?
- Weight44.5 g vs 76 g+71%
- Screen size2.02″ vs 1.43″+41%
- Battery capacity410 mAh vs 400 mAh+2%
Why is BT50 better than C28?
- AMOLED / OLED displayNo · C28: Yes
- Resolution (width)320 px vs 466 px+46%
- Pixel density250 ppi vs 326 ppi+30%
- Thickness13.3 mm vs 13 mm+2%
Specifications
Side by side
| Design & durability | ||
| Case size | 58 mm | 51 mm |
| Weight | 44.5 g | 76 g |
| Thickness | 13.3 mm | 13 mm |
| Height | 58.3 mm | 51.2 mm |
| Width | 46.1 mm | 51.2 mm |
| Water resistance | 1 ATM | 1 ATM |
| Ingress protection | — | IP68 |
| Water resistance (IPx) | — | IPx8 |
| Colours | Black, Green | Silver, Gray |
| Display | ||
| Screen size | 2.02″ | 1.43″ |
| Display technology | LCD | AMOLED |
| Panel | TFT LCD | AMOLED |
| AMOLED / OLED display | No | Yes |
| Resolution (width) | 320 px | 466 px |
| Resolution (height) | 390 px | 466 px |
| Pixel density | 250 ppi | 326 ppi |
| Peak brightness | — | 600 nits |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery capacity | 410 mAh | 400 mAh |
| Battery type | — | Li-Po |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| Sensors | Accelerometer, heart rate, SpO2, blood pressure | Accelerometer, heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | No | No |
| Connectivity | ||
| NFC payments | No | No |
| LTE (cellular) | No | No |
| eSIM | No | No |
| Bluetooth | — | 5.2 |
| Smart features | ||
| Speaker | Yes | Yes |
| Platform | ||
| Operating system | Proprietary OS | Proprietary OS |
| Platform | Proprietary | Proprietary |
