DLP LINK 144 Hz Ultra-Clear HD 4 PACK 3D Active Rechargeable Shutter Glasses for All 3D DLP Projectors - BenQ, Optoma, Dell, Mitsubishi, Samsung, Acer, Vivitek, NEC, Sharp, ViewSonic & Endless Others! Next Generation Super Fast 144Hz Refresh Rate (Backwards Compatible to slower 120Hz or 96Hz) Automatic Power Off Function within 1 minute of turning off your projector! Optimized for 3D Projectors (Not For Use With Samsung & Mitsubishi DLP Televisions) No Emitter required! Works with all DLP Link 3D projectors! Super Soft Black Rubberized Top Quality 3D Glasses (much more comfortable than lower quality standard plastic 3D glasses)!