Experience immersive 3D viewing with Full HD Active 3D Glasses, designed for seamless compatibility with a wide range of DLP Link projectors including Byintek. These glasses ensure a perfect sync with your projector's DLP Link technology, providing a flicker-free 3D experience for movies, presentations, and games. High-quality active shutter technology minimizes ghosting and provides crisp, clear 3D imagery. Lightweight and comfortable design allows for extended viewing sessions without discomfort. Long-lasting battery life ensures you can enjoy full-length movies or multiple shows without interruption. Easy setup with automatic sync, compatible with for all DLP Link 3D projectors. Lens Material:Wave Crystal Shutter Lens Frame rate:96Hz-144Hz Contrast ratio:1000:1+/-200 Battery type: rechargeable lithium battery Duration:40 hours Charging time:2-3 hours Viewing Angle:30°(L/R15°) Light Transmission:38%+/-2 Operating Temperature:0℃-45℃ Note:Active 3D shutter glasses must be used in conjunction with for DLP LINK3D projector or for DLPLINK 3D TV, does not support polarized 3D, does not support movie theaters, does not support televisions and PC monitors, laptops. Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Colour:Black Material:ABS+PC Package Contents: 8 x Shutter 3D Glasses Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.