Read our full Boox Note Air3 C review. Ideal for full-size docs The Onyx Boox Tab X is somewhere between an Android tablet and an e-reader. It features Android 11 software, but it has a 13.3-inch ...

That's why the Onyx Boox Note Air4 C, a $500 digital notebook and annotation tool, offered an alluring alternative: Mark up e-books and PDFs as much as you want -- and in color. I was intrigued.

BOOX Note Air 4C 10.3" Color E-Ink Tablet Our Take A powerhouse of a digital notebook, the Note Air 4C is a great device for studying, editing, and organization—but the e-ink color screen might ...