Dual Pack Value for Family Viewing: Includes 2 pairs of 3D glasses, perfect for shared 3D movie experiences at home or presentations in the office Superior 144Hz Refresh Rate: Next-generation 144Hz technology ensures ultra-smooth 3D performance, minimizing eye strain and enhancing depth perception Universal DLP-Link Compatibility: Works seamlessly with most DLP-Link 3D projectors from Acer, ViewSonic, BenQ, Optoma, Panasonic, Dell, Vivitek, and others. Not suitable for 3D TVs Lightweight, Comfortable & Stylish: Soft, lightweight frame with ergonomic fit allows for extended use without discomfort. Sleek design adds a modern touch Rechargeable Long-Life Battery: Each pair features a high-capacity rechargeable battery providing up to 30 hours per charge, with clear LED battery indicators ELEPHAS DLP Link 3D Glasses