| General | |
| Manufacturer: | Cube |
| Model: | U21GT |
| Other names: | iconBit NetTAB MATRIX HD |
| Year: | 2012 |
| Operating system: | Android 4.1 |
| Capacity battery (MAh): | 3500 |
| Measurements | |
| Dimensions (mm): (width x height x thickness) |
196.5 x 121 x 10.5 |
| Weight (g): | 308 |
| Processor | |
| Processor Type: | RockChip RK3066 |
| Clock Frequency (MHz): | 1600 |
| Memory | |
| Random access memory (RAM) (MB): | 1024 |
| Read-only memory (ROM) (GB): | 8/16 |
| Communications | |
| Wi-Fi: | 802.11b,g,n |
| Extras: | support external 3G modems. |
| Multimedia | |
| Screen Size: | 7 |
| Screen Resolution (px): | 800 x 1280 |
| Screen type: | IPS |
| Accelerator: | Mali-400 MP4 |
| Rear camera (Mp): | No |
| Front camera (Mp): | 0.3 |
| Speaker: | mono |
| Output of earphones: | 3.5 |
| Other: | G-Sensor |
| Management and input | |
| Touchscreen: | capacitive |
| Buttons: | optical joystick, physical buttons |
| Extension | |
| Memory Cards: | microSD, microSDHC |
| Connectors: | HDMI, USB-host, microUSB |
| Additionally | |
| Operation time: (according to the manufacturer) |
Up to 6 hours. |