Epson BrightLink 475Wi 2600 Lumens WXGA Ultra Short Throw (UST) ProjectorThe Epson BrightLink 475Wi Interactive Projector with Mount is such an unusually powerful communications tool it's hard to decide where to start. But we'll give it a shot. First let's go over the usual stuff. It's got 2600 Lumens of brightness and a 3000: 1 contrast ratio. So, it's got plenty of projection power to show a big bright picture in a normally lit room. The 475Wi can handle input in the NTSC, PAL and SECAM TV standards and its 100 to 240 V