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- Solaris Color vs InkPad 4 black/grey
inkBOOK Solaris Color vs Vivlio InkPad 4 black/grey
What Solaris Color does better (4) and where InkPad 4 black/grey wins (3) — every spec side by side.
vs
8.4Screen5.5
6.3Comfort & build2.2
4.8Battery6.4
7.5Features7.1
Dimensions
Size comparison
Solaris ColorInkPad 4 black/grey
| Solaris Color | InkPad 4 black/grey | Difference | |
|---|---|---|---|
| Height | 154 mm | 189 mm | −35 mm |
| Width | 112 mm | 134 mm | −22 mm |
| Thickness | 8.4 mm | 8 mm | +0.4 mm |
| Weight | 174 g | 265 g | −91 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Solaris Color better than InkPad 4 black/grey?
- Warm light (adjustable colour temperature)Yes · InkPad 4 black/grey: No
- Weight174 g vs 265 g+52%
- Colour screenYes · InkPad 4 black/grey: No
- RAM2 GB vs 1 GB2×
Why is InkPad 4 black/grey better than Solaris Color?
- Battery capacity1,900 mAh vs 2,000 mAh+5%
- Screen size6″ vs 7.8″+30%
- Thickness8.4 mm vs 8 mm+5%
Specifications
Side by side
| Screen | ||
| Screen size | 6″ | 7.8″ |
| Resolution | 1448 × 1072 | 1872 × 1404 |
| Pixel density | 300 ppi | 300 ppi |
| Screen technology | E Ink Kaleido 3 | E Ink Carta |
| Colour screen | Yes | No |
| Colour pixel density | 150 ppi | — |
| Grey levels | — | 16 |
| Touchscreen | — | Yes |
| Front light | Yes | Yes |
| Warm light (adjustable colour temperature) | Yes | No |
| Design | ||
| Weight | 174 g | 265 g |
| Width | 112 mm | 134 mm |
| Height | 154 mm | 189 mm |
| Thickness | 8.4 mm | 8 mm |
| Protection rating | — | IPX7 |
| Water resistance (IPx) | — | IPx7 |
| Colours | — | Black, Grey |
| Battery | ||
| Battery capacity | 1,900 mAh | 2,000 mAh |
| Battery life (claimed) | 2 weeks | — |
| USB-C | Yes | Yes |
| Storage | ||
| Storage | 32 GB | 32 GB |
| RAM | 2 GB | 1 GB |
| Software & books | ||
| Platform | Android | — |
| Operating system | Android 11 | — |
| Supported formats | EPUB, PDF, MOBI, AZW3, FB2, CBZ, DOC, RTF, TXT | EPUB, PDF, MOBI, FB2, DJVU, CBZ, CBR, DOCX, DOC, RTF, TXT, HTML, CHM |
| EPUB support | Yes | Yes |
| Text-to-speech | Yes | Yes |
| Audiobooks / audio playback | Yes | Yes |
| Connectivity & audio | ||
| Wi-Fi | Yes | Yes |
| Bluetooth | Yes | Yes |
| Mobile data (4G / LTE) | — | No |
| Built-in speaker | — | Yes |
| Performance | ||
| CPU clock | — | 1 GHz |
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