Here is a document camera that lets you present like a pro. The AVer M70W Mechanical Arm Document Camera has 4K output on HDMI. It has a 13MP camera with 10x optical and 23x digital zoom. The camera has WiFi, HDMI, and USB connectivity.
The M70W supports a shooting area of 18.89” x 13.58”. It is powered by the AVerTouch software. You can find out more about it here.