Dimensions
Size comparison
C9Watch S1
| C9 | Watch S1 | Difference | |
|---|---|---|---|
| Height | 43 mm | 46.5 mm | −3.5 mm |
| Width | 43 mm | 46.5 mm | −3.5 mm |
| Thickness | 10 mm | 11 mm | −1 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is C9 better than Watch S1?
- Thickness10 mm vs 11 mm+10%
Why is Watch S1 better than C9?
- Built-in GPSNo · C9: Yes
- AMOLED / OLED displayNo · C9: Yes
- NFC paymentsNo · C9: Yes
- Battery capacity210 mAh vs 470 mAh2.2×
- SpeakerNo · C9: Yes
- Resolution (width)240 px vs 466 px+94%
- Screen size1.28″ vs 1.43″+12%
- Pixel density265 ppi vs 326 ppi+23%
Specifications
Side by side
| Design & durability | ||
| Case size | 43 mm | 46 mm |
| Weight | — | 53 g |
| Thickness | 10 mm | 11 mm |
| Height | 43 mm | 46.5 mm |
| Width | 43 mm | 46.5 mm |
| Case material | — | Stainless steel |
| Sapphire crystal | — | Yes |
| Lens / cover glass | Scratch-resistant glass | — |
| Water resistance | — | 5 ATM |
| Ingress protection | IP68 | — |
| Water resistance (IPx) | IPx8 | — |
| Colours | Black, Blue, Pink | Black, Silver |
| Display | ||
| Screen size | 1.28″ | 1.43″ |
| Display technology | LCD | AMOLED |
| Panel | IPS LCD | AMOLED |
| AMOLED / OLED display | No | Yes |
| Resolution (width) | 240 px | 466 px |
| Resolution (height) | 240 px | 466 px |
| Pixel density | 265 ppi | 326 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery capacity | 210 mAh | 470 mAh |
| Battery type | — | Li-Po |
| Wireless charging | — | Yes |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | — | Yes |
| Sensors | Accelerometer, gyro, heart rate | Accelerometer, gyro, compass, barometer, heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | No | Yes |
| Dual-band GPS | — | Yes |
| Satellite systems | — | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | — | Yes |
| Compass | — | Yes |
| Connectivity | ||
| NFC payments | No | Yes |
| LTE (cellular) | No | No |
| eSIM | No | No |
| Wi-Fi | — | Wi-Fi 4 |
| Bluetooth | 5 | 5.2 |
| Smart features | ||
| Speaker | No | Yes |
| Platform | ||
| Operating system | Proprietary OS | Proprietary OS |
| Platform | Proprietary | Proprietary |
