BenQ MX501 XGA DLP Projector, 2700 Lumens, 4000:1 Contrast Ratio, 1024 x 768 Native Resolution Long Lamp Life at up to 6000 hours Enjoy a lamp life performance of up to 6000 hours*  twice the lamp life expectancy of average projector lamps on the market! This certainly lowers the number of lamp changes and keeps all maintenance to a minimum. Reliable Picture Quality with True-to-Life Color Performance BenQ projectors that use DLP technology are virtually immune to color decay  the yellow/green tint that some projector images develop over extended periods of usage. BenQ DLP projectors feature a filter-free design which could reduce the need for filter cleaning and filter replacement. This reduces the labor as well as the budget for filter maintenance and replacement. A 2700 ANSI lumens projection lamp ensures great viewing even is location with low ambient light. The MX501 is ideal for small-sized meeting room with under 25 people. MX501 is equipped with 3D projection technology to bring you the same amazing 3D effects you get in 3D movies. Offered for no added cost, the 3D feature on 3D-ready BenQ projectors get your audience for an immersive real-life experience.