SainSonic 144 Hz 3D Active Rechargeable Shutter Glasses for 3D DLP-Link Projectors, TV and HDTV - SamSung, Acer, Benq, Viewsonic, Optoma, Sharp, Mitsubishi, Nvdia, Sony, LG, TCL, Panasonic, Vivitek, Dell, Nec (2 Pack Zebra Black, Zebra Black) High DifinitionHigh permeability lens, which is brighter and produces no shadow or tones darkend 3D image when watching. FlexibilityNew upgraded ABS material ensures the flexibility of frame, more durable, and won't be deformed. ComfortA new ergonomic design, the surface layer of rubber to ensure the acceptability of the skin, nose pad design is more comfortable, especially for Westerners nose. DurableTurn off automatically without focus, auto-focus again when the power is turned on, saving 50% battery power, more durable. MatchingZebra 3D DLP glasses are made from the OEM of Benq, whose projectors takes more than 70% market share. No difference of the function between Zebra glasses and original benq, as the full range by perfect compatible.