Onyx is an established maker of E Ink tablets that can accommodate pen input as well as run third-party applications, thanks to its implementation of Android. Onyx devices come in a range of sizes, for a range of use cases. I recently looked at a pair of e-reader/content creation devices -- the 13.3-inch Boox Max Lumi2 and 10.3-inch Boox Note Air2.
Now, Onyx has adopted the E Ink Kaleido Plus colour screen, which offers 4,096 colours on a low-power panel. The 7.8-inch Onyx Boox Nova Air C couples this with Android 11 and stylus-based input. It promises four weeks of battery life in standby mode and costs$419.99/