| Price | 0 USD |
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| Brand | niu |
| Model | NIU C21A |
| Status | Discontinued |
| Release Date | 2013-03 |
| RAM | |
| STORAGE | 32 Mbit + 32 Mbit |
| Memory Slot | microSD, up to 32 GB |
| Rear Camera | MP |
| Feature | |
| Video Recording | No |
| Front Camera | MP |
| Front Video Recording |
| Network | 2G |
| USB | microUSB |
| GPS | No |
| Bluetooth | 2.0 |
| WLAN | No |
| SIM | Dual SIM (Mini-SIM) |
| EDGE | No |
| GPRS | Up to 48 kbps |
| Speed |
| Type | Removable Battery |
| Size | 600 mAh, Li-Ion Battery |
| Charging |
| Sensors | |
| Type | TFT, 256K colors |
| Size | 1.8 inches, 128 x 160 Pixel |
| PPI | ~114 ppi density |
| Screen to Body Ratio | ~21.4% |
| Protection | |
| Build |
| OS | |
| Chipsets | |
| GPU | |
| CPU |
| Colors | Black, White, Blue, Green, Purple, Red, Fuchsia |
| Weight | 73 g without battery (2.57 oz) |
| Dimensions | 106 x 45 x 14.5 mm (4.17 x 1.77 x 0.57 in) |
| NFC | |
| 3.5mm Jack | |
| Charging | |
| Water Proof |
| Radio | Stereo FM radio |
| Loudspeaker |