3 Packs Active shutter 3D Glasses for Optoma /Benq /Viewsonic /Acer /Dell/ Vivitek /Sharp/ LG/NEC /Mitsubishi DLP-LINK 3D Projectors Designed for use with Optoma/Benq /Viewsonic /Acer /Dell/ Vivitek /Sharp/ LG/ NEC /Mitsubishi 3D projectors High quality stereoscopic 3D solution Button Battery supports 100 hours continuously working time High transmission lenses with brighter 3D video image Detachable Arms, light design, 27g only