They need an e-ink screen that is big enough to show an A4 PDF. The e-reader (which actually an Android tablet with an e-ink screen) below at [1] is the only on

They need an e-ink screen that is big enough to show an A4 PDF. The e-reader (which actually an Android tablet with an e-ink screen) below at [1] is the only one I am aware of, apart from the very expensive Sony legal A4 e-reader. (I own the smaller version of this e-reader and it is excellent) [1] https://onyx-boox.com/shop/onyx-boox-m96-universe-97-inch-e-ink-pearl-display-e-book-reader-google-play-ivona-text-speech-bluetooth-4-0-low-energy-powered-android-4-0-4/ https://onyx-boox.com/shop/onyx-boox-m96-universe-97-inch-e-...