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- Focus Plus vs InkPad 4
inkBOOK Focus Plus vs PocketBook InkPad 4
What Focus Plus does better (2) and where InkPad 4 wins (1) — every spec side by side.
vs
8.8Screen8.5
2.5Comfort & build5.6
7.6Battery6.4
8.1Features6.8
Dimensions
Size comparison
Focus PlusInkPad 4
| Focus Plus | InkPad 4 | Difference | |
|---|---|---|---|
| Height | 192 mm | 189 mm | +3 mm |
| Width | 140 mm | 134 mm | +6 mm |
| Thickness | 9 mm | 8 mm | +1 mm |
| Weight | 251 g | 265 g | −14 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Focus Plus better than InkPad 4?
- Battery capacity2,900 mAh vs 2,000 mAh+45%
- Weight251 g vs 265 g+6%
Why is InkPad 4 better than Focus Plus?
- Thickness9 mm vs 8 mm+12%
Specifications
Side by side
| Screen | ||
| Screen size | 7.8″ | 7.8″ |
| Resolution | 1872 × 1404 | 1872 × 1404 |
| Pixel density | 300 ppi | 300 ppi |
| Screen technology | E Ink Carta 1300 | E Ink Carta |
| Colour screen | No | No |
| Grey levels | — | 16 |
| Touchscreen | — | Yes |
| Front light | Yes | Yes |
| Warm light (adjustable colour temperature) | Yes | Yes |
| Design | ||
| Weight | 251 g | 265 g |
| Width | 140 mm | 134 mm |
| Height | 192 mm | 189 mm |
| Thickness | 9 mm | 8 mm |
| Protection rating | — | IPX8 |
| Water resistance (IPx) | — | IPx8 |
| Physical page-turn buttons | — | Yes |
| Auto-rotation (G-sensor) | — | Yes |
| Colours | — | Silver |
| Battery | ||
| Battery capacity | 2,900 mAh | 2,000 mAh |
| Battery life (claimed) | 4 weeks | — |
| USB-C | Yes | Yes |
| Storage | ||
| Storage | 32 GB | 32 GB |
| RAM | 2 GB | — |
| Memory card slot | Yes | — |
| Max memory card | 2,048 GB | — |
| Pen & notes | ||
| Pen support (handwriting) | — | No |
| Software & books | ||
| Platform | Android | Own Linux-based system |
| Operating system | Android 11 | Linux |
| Google Play apps | — | No |
| Built-in bookstore | — | PocketBook Store |
| Supported formats | EPUB, PDF, MOBI, AZW3 | EPUB, PDF, MOBI, FB2, DJVU, DOCX, DOC, RTF, TXT, HTML, CHM, PRC |
| EPUB support | Yes | Yes |
| Text-to-speech | Yes | Yes |
| Audiobooks / audio playback | — | Yes |
| Connectivity & audio | ||
| Wi-Fi | Yes | Yes |
| Bluetooth | Yes | Yes |
| Mobile data (4G / LTE) | — | No |
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