The ProScreen 4750 is designed to work with PC, MAC, workstations to deliver XGA resolutions, often required by engineers, graphic designers and others using high definition applications such as CAD/CAM or small, detailed financial data. The portable 4750 is the easy-to-use, reliable multimedia projector on which you can rely to deliver superb, bright picture performance for up to 4,000 hours. The ProScreen 4750 Impact gives superb brightness with it's 1000 Ansi Lumen.