| General | |
| Manufacturer: | Ritmix |
| Model: | RBK-400 |
| Measurements | |
| Dimensions (mm): (width x height x thickness) |
132 x 200 x 12 |
| Weight (g): | 280 |
| Display | |
| Display type: | TFT color |
| Screen Size: | 7 |
| Screen Resolution (px): | 480 x 800 |
| Built-in lights: | Yes |
| Supported formats | |
| Text: | EPUB, FB2, LRC, MOBI, PDB, PDF, RTF, TXT |
| Graphic: | BMP, FLC, GIF, JPEG, PNG |
| Audio: | AAC, FLAC, MP3, OGG, WAV, WMA |
| Video: | 3GP, ASF, AVI, DAT, FLV, MPEG-4, WMV, h.264 |
| Other: | Flash |
| Processor | |
| Processor Type: | RockChip RK2729 |
| Clock Frequency (MHz): | 400 |
| Memory | |
| Random access memory (RAM) (MB): | 256 |
| Read-only memory (ROM) (MB): | 256 |
| Memory Cards: | microSD, microSDHC |
| Communications | |
| Multimedia | |
| Other: | Dictaphone |
| Charging | |
| Capacity battery (MAh): | 2000 |
| Running time (number of displayed pages) |
2 feature films |
| Charging | |
| Charging from USB: | Yes |
| Charging from the mains: | Yes |
| Additionally | |