| General | |
| Manufacturer: | ORSiO |
| Model: | b751 |
| Measurements | |
| Dimensions (mm): (width x height x thickness) |
108x149x10 |
| Weight (g): | 170 |
| Display | |
| Display type: | E-Ink Vizplex |
| Screen Size: | 5 |
| Screen Resolution (px): | 600 x 800 |
| Grayscale: | 8 |
| Built-in lights: | No |
| Supported formats | |
| Text: | DJVU, FB2, PDF, RTF, TXT |
| Graphic: | JPEG, PNG |
| Audio: | MP3 |
| Processor | |
| Processor Type: | Samsung S3C2440 |
| Clock Frequency (MHz): | 400 |
| Memory | |
| Random access memory (RAM) (MB): | 64 |
| Read-only memory (ROM) (MB): | 512 |
| Memory Cards: | SD, SDHC |
| Communications | |
| Multimedia | |
| Output of earphones: | 2.5 |
| Charging | |
| Charging from USB: | Yes |
| Charging from the mains: | Yes |
| Additionally | |
| Features: | The housing is made of robust metal |