The Boxlight ProjectoWrite DX25N-U Projector is a portable interactive projector. It is capable of projecting a 60 projection screen at only 2.8'. The mouse functions as an interactive tool that lets you interact with any other interactive software, web pages, the onscreen keyboard, and any mouse applications. You can write on the images or text with included colors and highlighting tools, save your work to an image folder on your PC. You also get network capability, and it integrates seamlessly with computers, printers and other peripherals. The ProjectoWrite DX25N-U has a contrast ratio of 1600:1, 2500 lumens and a native XGA resolution. Its lamp is rated at 2,000 hours in standard mode and 3,000 hours in economical mode. The ProjectoWrite DX25N-U being compact in size is ideal to carry around from one classroom to another.