Panasonic PT-EX610 LCD 720p XGA HDTV 4:3 6200 ANSI Lumens ProjectorPanasonic's PT EX610U XGA 3LCD Projector features XGA 1024 x 768 resolution. It produces brightness up to 6200 Lumens and the iris automatically adjusts to match the situation, which results in a 5000: 1 contrast ratio. It's designed to afford multiple uses and solutions for the classroom and the boardroom. The projector's lamp and filter life cycle reduces maintenance hassle and ensures low TCO with a maximum lamp replacement cycle of up to 4500