The OPTOMA's W402 4500 lumen WXGA DLP 3D multimedia projector is ideal for usage in classrooms, conference rooms, and other similar settings. It has a brightness of 3800 lumens and a contrast ratio of 20,000:1. The W402 features a native resolution of WXGA 1280 x 800 and can handle video signals up to UXGA 1600 x 1200. The bulb in this projector has a long life of up to 6,500 hours and is powered by a DLP chip technology. BrilliantColor technology, which delivers multi-color processing for accurate reproduction, is also included with the W402. The W402 has a throw ratio of 1.28 to 1.536:1, and it can project up to a 300" image.