Product Description Size: 16.2*16.5*4.5cm Colour: Black Frame material: ABS+PC Lens material: LCD shutter lens Package content: 1*Shutter 3D glasses 1.Designed for 3D DLP-LINK projector 3D Glasses use "DLP Link" as their sync method, no Emitter required! can quickly works with all DLP Link projectors. 2. Strong Compatibility Our DLP 3D active glasses is compatible withSony projector, Acer projector, BenQ projector, XGIMI projector, JMGO projector, Panasonic projector. (Note: Does not support all TVs, monitors, ordinary projectors, infrared projectors, Bluetooth 3D projectors) 3. Super Fast 144Hz Refresh Rate3D DLP glasses adopts the newest active shutter technology, next generation super fast 144Hz refresh rate, High definition, no ghosting images, no flickering, generates a better brightness, sharpness and contrast, provides a great 3D viewing experience for you ! 4.Long Lasting Battery The active 3D glasses comes with built-in high capacity rechargeable battery, continuous working 50 hours after fully charged with USB , 5.High quality Materials & Lightweight & Comfortable The DLP 3D active shutter glasses is made of high-quality super Soft black rubberized, much more comfortable than lower quality standard plastic 3D glasses; comfortable to wear for a long time.