Sony TDG-BR100 Adult Size 3D Active Glasses, Black Requires compatible 3D Sony BRAVIA HDTV, 3D Sync Transmitter and 3D source content Energy efficient design, including an auto-standby feature up to 100 hours of battery life Seamless synchronization for a clear precise image Stylish, ergonomic 3D glasses in black adjustable for high comfort sized for adults Wide viewing angle for flexible sitting Stylish, ergonomic 3D glasses in black adjustable for high comfort--sized for adults Seamless synchronization for a clear precise image; excellent color accuracy and high contrast Wide viewing angle for flexible sitting; fits even while wearing glasses Energy efficient design, including an auto-standby feature--up to 100 hours of battery life Requires compatible 3D Sony BRAVIA HDTV, 3D Sync Transmitter, and 3D source content