The Onyx Boox Tab X is a very different beast from other budget tablets. It also runs on the Android platform, albeit the non-upgradeable Android 11, but it’s an e-ink tablet with a A4-sized monochrome display and bundled stylus – the idea being that users should use it as a portable notepad, jotting down memos, marking up documents or sketching out ideas before exporting the resulting files to other devices.