The largest ArtFrame by far has a resolution of 2560x1440 pixels and is powered by AA batteries. It works in the same way as all other ArtFrames:
It is operated via an unobtrusive push-button with an LED ring at the bottom of the frame, local WiFi and hotspot with a local, web-based configuration interface.
The device is exclusively build to order and shipped worldwide. If you are interested, please write an email.