Grab their attention and hold it. Whether you?re introducing a medical breakthrough, forecasting market performance or giving a lecture in humanities, the 3M? Model 9800 Overhead Projector will help you grab the audience?s attention and keep it. With 6000 lumens of light, it?s bright enough to use with the lights on, and unlike many projectors there?s no light drop-off at screen edge. The Model 9800 gives new life to your overhead transparencies and brings out all the rich colors of LCD projection panels. It also features a high-low intensity switch for adjusting image brightness and a quickchange lamp changer.