these have not been used and are still wrapped in the plastic they came in with the lens protection film still on. The Samsung 3D Active Glasses SSG-3500CR are black rechargeable glasses designed for use with 3D TVs. Made by Samsung, these active glasses come as a single unit and are manufactured in China. The model number is SSG-3500CR, offering viewers a comfortable and immersive 3D viewing experience. These glasses provide a seamless integration with Samsung's 3D TV technology, enhancing the overall entertainment experience for users.