About this item: 
ULTRA-SHORT THROW: Experience a large 100" diagonal image projected from only inches away with an ultra-short throw lens; ultra short throw projectors allow placement close to the screen or wall providing easy cable management and an unobstructed projected image from foot traffic or objects 
INCREDIBLE PICTURE QUALITY: Enjoy bright, razor-sharp images with 3, 600 lumens, 20, 000: 1 contrast ratio, and 1080p resolution 
EASY IMAGE SET-UP: The auto keystone sensors and four-corner correction ensure a sharp, detailed image for quick, trouble-free set-up; when the projector or table is bumped, the image will refocus instantly 
LONG LAMP LIFE: Enjoy up to 15, 000 hours of lamp life enabling an average of 4 hours of viewing time every day 10 plus years 
FULL 3D: The GT5600 displays true 3D content from almost any 3D source, including 3D Blu-ray Disc players, 3D broadcasting, and the latest-generation game consoles. Support for 144Hz rapid-refresh rate provides ultra-smooth flicker-free images; 3D glasses required 
SCREEN MIRRORING: Enjoy content from iOS or Android mobile devices on the big screen with USB display connectivity 
GO WIRELESS: Share wireless presentations and images with Optoma HDCast Pro 1080p HDMI MHL Multimedia Stick, sold separately; WUSB adapter required, sold separately