A great fit for demanding middle & large classrooms & meeting rooms where cost is critical The VPL-CH355 delivers an outstanding brightness of 4000 lumens & ultra high-quality images with WUXGA resolution. Sony 3LCD Bright Era™ panel technology provides higher picture quality substantially brighter images higher efficiency consistent colour stability & longer durability. It also delivers installation flexibility environment-friendly features & a low total cost of ownership in a stylish design that blends into any decor. The lens shift/zoom capability & the image correction features easily allow users to fit any image onto the screen even from an offset projection angle. The projector allows simple connectivity using an HDBase T™* digital interface multi signal transmission system providing a single cable cost-effective long-distance & high-quality digital transmission solution. in addition the projector is economically designed for optimum energy efficiency thanks to its energy saving features & has all the features & functionality that you would expect from Sony particularly in terms of installation projection usability & maintenance..