Optoma 3752RK 75 Inch Interactive 4K UHD Touch Panel with Android and Built-In Speakers

The Optoma 3752RK is a 75-inch interactive flat panel at 3840 x 2160, with multi-touch so several people can write or annotate at once.

Built-in Android runs apps and whiteboard tools directly on the screen. HDMI and USB ports connect laptops, media players and conferencing kit, and speakers are included.

It can be fixed to a compatible wall bracket or put on a mobile stand. This is a classroom and meeting-room display, so check the connections yourself before using it with a recorder.