The Vivitek DU6771 is designed for large meeting room where brightness and installation flexibility is the key consideration. Featuring dual-lamp technology, interchangeable lenses and advanced display technologies the DU6771 delivers bright, superb digital images with full color saturation. Intended for the heavy duty applications it can operate 24/7, delivering high brightness of 6500 ANSI Lumens. The model features a high contrast ratio of 3000:1 for deep blacks and rich colours. The DU6771 is unmatched in performance and functionalities.