Sony TMR-BR100 3D Sync Transmitter for Sony's 3D Glasses, Black Synchronizes Sony's 3D glasses with compatible BRAVIA HDTVs Provides wide viewing angle for flexible sitting Uninterrupted 3D viewing with a robust sync signal that is less prone to interference Mounting materials included Requires 3D-compatible Sony BRAVIA HDTV, 3D Active Glasses, and 3D source content