 "Elmo MX-1 Visual Presenter - Vision Bundle document camera with CRA-1 W" " Elmo W 1357-7 Document Cameras & Overhead Projectors CDWG.com
"Present your lesson plan in spectacular 4K Ultra HD. The MX-1 Visual Presenter is a true 4K document camera. The SuperSpeed USB 3.0 port allows for viewing of video at Full HD." 
 "Ken-a-Vision 7880 Vision Viewer Document Camera" " Ken-a-Vision Camera - Cameras & Overhead Projectors CDW.com
"With the Ken-A-Vision Digital Vision Viewer, it is easy to capture images and movies. Vision Viewer offers one cord convenience, no confusing cables to sort out that can bring your lesson plan or presentation to a stand still. No confusing buttons to fumble with on the unit because you use the mouse on your computer.The 7880 Auto Focus Vision Viewer delivers superior image quality in real time. Display documents, nearby objects or even objects at a distance. Vision Viewer by Ken-A-Vision... making it easy to focus on teaching." 