Sony TDG-BR50/B 3D Active Glasses (Small Size) Excellent color accuracy & high contrast. Enjoy 3D content without compromise to picture quality Energy efficient design, including an auto-standby feature, will give you up to 100 hours of 3D viewing Adjustable frames will fit just about everyone in your family with a comfortable ergonomic design Experience 3D from a wide viewing angle with Sony's dynamic 3D active glasses Enjoy a 3D experience with Sony 3D glasses that automatically synchronize with Sony 3D TVs