ViewSonic PA503S 3800-Lumen SVGA DLP Projector, SVGA Resolution, Brightness of 3800 Lumens, Built-In 2-Watt Speaker, RS-232 Controllable
ViewSonic PA503X 3800-Lumen WXGA DLP Projector, 3D-Capable, 5Color Modes,VGA Output for Loop-Through, 2W Speaker, HDMI
Viewsonic Business Projector, 3,800 Lumens WXGA, 22,000:1 contrast ratio : PA503W