E-Ink reader for a wall-mounted project

Dear community,

For a hobby project I am looking into buying an e-reader with an e-ink display to mount on the wall. I will create a custom webpage with buttons to control smart lighting, music etc. A fast refresh rate isn't necessarily required.

Ideally, the device:

• Has an e-ink display
• Has a full-screen web browser without navigational controls (a.k.a. kiosk mode)
• Has very low Wi-Fi idle usage
• Has no screensaver

I am experienced with flashing custom firmware and similar DIY practices so that's no problem.

I'll be happy to know which one to buy!