| General | |
| Manufacturer: | Ritmix |
| Model: | RBK-420 |
| Measurements | |
| Dimensions (mm): (width x height x thickness) |
122 x 194 x 13 |
| Weight (g): | 270 |
| Display | |
| Display type: | TFT color |
| Screen Size: | 7 |
| Screen Resolution (px): | 480 x 800 |
| Built-in lights: | Yes |
| Supported formats | |
| Text: | EPUB, FB2, HTML, LRC, MOBI, PDB, PDF, RTF, TXT |
| Graphic: | BMP, FLC, GIF, JPEG, PNG |
| Audio: | AAC, FLAC, MP3, OGG, WAV, WMA |
| Video: | 3GP, ASF, AVI, MPEG-4, RM, RMVB, WMV, h.263 |
| Processor | |
| Processor Type: | RockChip RK2738 |
| Memory | |
| Random access memory (RAM) (MB): | 256 |
| Read-only memory (ROM) (MB): | 4096 |
| Memory Cards: | microSD, microSDHC |
| Communications | |
| Multimedia | |
| Speaker: | mono |
| Output of earphones: | 3.5 |
| Other: | FM-radio, Dictaphone |
| Charging | |
| Capacity battery (MAh): | 2000 |
| Charging | |
| Charging from USB: | Yes |
| Charging from the mains: | Yes |
| Additionally | |