The Optoma DX229 is the perfect projector for all your display needs. An ultra-bright 2800L with a 10, 000:1 contrast, ensures your presentations & graphics are crystal clear leaving your audience speechless every time the projector is turned on. ideal to be used with interactive whiteboards in schools or delivering an important presentation at work. Installed or on the move, the versatile DX229 incorporates a built in speaker, 120 Hz 3D Ready technology & Eco+ technology that brings together superb picture quality & performance with optimized lamp life through energy saving features that are easy to use.