About this item: 
Built-in interactivity powerful projector plus pen combination provides a complete interactive solution without the need for an expensive electronic whiteboard 
PC-Free annotation written on projected images from iPads, document cameras, and Blu-Ray players, or directly on ordinary whiteboards without ever connecting to a computer 
Dual Pen Support innovative pen technology allows two users to annotate simultaneously, anywhere on the board 
Easy setup no driver installation2; auto-calibration; convenient tools including horizontal keystone correction, Quick Corner, and more 
Eliminate shadowing project ultra-bright, ultra-wide WXGA images up to 100 from less than 13 away