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 . 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 , infrared , Bluetooth 3D ) 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.