| Local Name | C21 |
| Technology | GSM |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 - CM21A003 |
| GPRS | Up to 48 kbps |
| EDGE | No |
| Announced | 2016, July. Released 2016, August |
| Status | Discontinued |
| Dimensions | 113 x 48.5 x 14.6 mm (4.45 x 1.91 x 0.57 in) |
| Weight | 70 g (2.47 oz) |
| SIM | Dual SIM (Mini-SIM) |
| Display Type | Li-Ion 600 mAh, removable |
| Screen Size | 1.8 inches, 10.2 cm2 (~18.6% screen-to-body ratio) |
| Resolution | 128 x 160 pixels (~114 ppi density) |
| Chipset | Spreadtrum SC6531DA |
| CPU | 321 Mhz |
| Card Slot | microSDHC (dedicated slot) |
| Phone Book | Yes |
| Call Records | Yes |
| Internal Memory | 4MB 4MB RAM |
| Video | Yes |
| Loudspeaker | Yes |
| 3.5mm Jack | No |
| WLAN | No |
| Bluetooth | 2.1 |
| NFC | No |
| Radio | Stereo FM radio |
| USB | microUSB 2.0 |
| Messaging | SMS |
| Games | No |
| Java | No |
| Features Summary | MP3/WAV player |
| Stand By | Up to 180 h |
| Talk Time | Up to 3 h |
| Colors | Black, White, Red, Blue |