Sony TDG-BR250 Active Shutter 3D Glasses for Bravia TV. Active 3D glasses give immersive 3D viewing capabilities with clarity and won't cause headache as with passive 3d as in theatre. Not compatible with other brand 3D TVs. Sparingly used only. Second glass is unused. Pls check compatibility with me before purchase. Can be used for viewing or as Collectible item. 2 glasses worth 3490/- each.