| Brand: | CUBOT |
| Model: | C21 |
| Release Date: | 2023, November |
| Display | |
| Size: | 1.32 inches |
| Resolution: | 360 x 360 pixels (~386 ppi density) |
| Technology: | TFT LCD |
| Protection: | Corning Gorilla Glass |
| Battery | |
| Capacity: | 300 mAh, non-removable |
| Memory | |
| Expandable: | No |
| Body | |
| Dimensions: | 46.5 x 46.5 x 13 mm (1.83 x 1.83 x 0.51 in) |
| Weight: | - |
| Connectivity | |
| Wifi: | No |
| Bluetooth: | 5.0, A2DP |
| Nfc: | No |
| Usb: | No |
| Headphone Jack: | No |
| Network: | No cellular connectivity |
| Sensors: | Accelerometer, heart rate, SpO2, blood pressure |
| Colors: | Black, Silver |