Featuresr support all dlp link 3d projectorsr optical communication method work without emitterr auto power off function energy efficiencyr rechargeable design built in high capacity rechargeable battery one full charge for 50 hours usingr eminent chipset with quick response timer high transmission lenses with brighter 3d video imager high tech light speed lcd shutter technologyr high quality stereoscopic 3d solutionr low energy alarm functionr auto power off functionr smart synch