ViewSonic LS711HD Golf Simulator Projector4,200 ANSI Lumens 1080p Short Throw Laser Installation Projector 3rd generation laser phosphor technology with up to a 30,000 hour lifespan 4,200 ANSI Lumens offering bright images in any environment High native contrast ratio achieved through Texas Instruments 0. 65" DMD chip 0. 49 short throw for seamless edge blending without shadows Compact size and light weight reducing cost of transportation and installation Installation flexibility: H V