VIEWSONIC PROJECTOR 4000 LUMENS/PS502W

4,000 ANSI Lumens WXGA Short Throw Business & Education Projector? — 4,000 ANSI Lumens offering clear images in any environment?
— 0.52 Short throw ratio for minimal space consumption?
— Up to 300" ultra large screen with lower cost-per-inch??
— Easy and flexible connection: dual HDMI ports, USB Type-A port?
— Convenient software updates for projectors via USB connection