Boox (Onyx)
Boox Tab Ultra C
Mechanically the Tab Ultra with a Kaleido panel dropped in — which counter-intuitively also raised mono text to 300 ppi, so it is sharper than the black-and-white model. The catch is ghosting, which reviewers found bad even in the fastest refresh mode. Boox replaced it with the C Pro barely five months after launch.
Full specification
| Released | May 2023 |
|---|---|
| Screen | 10.3″ e-ink |
| Resolution | 1860×2480 |
| Colour | Monochrome |
| Frontlight | Yes |
| Writing feel | ●●●○○ (3/5) |
| Operating system | Android 11 (Google Play) |
| PDF hyperlinks | Yes |
| Handwriting search | Yes |
| Stylus included | Yes |
| Storage | 128 GB |
| Weight | 480 g |
| Price at launch | $$$ · Premium |
What we like
- +300 ppi mono, sharper than Tab Ultra
- +Colour highlighting on annotations
- +128 GB plus microSD
What we don't
- −Persistent ghosting reported
- −Colour muted at 150 ppi
- −Superseded within five months