| General | |
| Manufacturer: | PocketBook |
| Model: | Pro 903 |
| Measurements | |
| Dimensions (mm): (width x height x thickness) |
190.3 x 263 x 11 |
| Weight (g): | 584 |
| Display | |
| Display type: | E-Ink Vizplex |
| Screen Size: | 9.7 |
| Screen Resolution (px): | 825 x 1200 |
| Grayscale: | 16 |
| Touchscreen: | Yes |
| Built-in lights: | No |
| Supported formats | |
| Text: | CHM, DJVU, DOC, DOCX, EPUB, FB2, HTML, MOBI, PDF, PRC, RTF, TCR, TXT |
| Graphic: | BMP, JPEG, PNG, TIFF |
| Audio: | MP3 |
| Other: | Adobe DRM, ZIP |
| Processor | |
| Processor Type: | Samsung S3C6410 |
| Clock Frequency (MHz): | 533 |
| Memory | |
| Random access memory (RAM) (MB): | 256 |
| Read-only memory (ROM) (MB): | 2048 |
| Memory Cards: | microSD, microSDHC |
| Communications | |
| Bluetooth: | Yes |
| Wi-Fi: | Yes |
| Other: | 3G |
| Multimedia | |
| Speaker: | stereo |
| Output of earphones: | 3.5 |
| Other: | G-Sensor |
| Charging | |
| Capacity battery (MAh): | 1530 |
| Running time (number of displayed pages) |
7000 |
| Charging | |
| Charging from USB: | Yes |
| Charging from the mains: | Yes |
| Additionally | |