[RF 3D Glasses] The active shutter 3D glasses use RF to transmit signals, works without emitter. Compared with traditional IR signal transmission, the RF signal connection is faster, and the continuity is more stable. Pack of 2, super saving [Compatible Devices] The RF 3D active shutter glasses suitable for most of RF 3D signal TVs and 3D projectors. Compatible 3D RF projector: EPSON, Sony, JVC, xiaomi2, Lenovo and other more; Compatible 3D HD TVs: Epson, Samsung, Sony, Panasonic, Sharp, Toshiba, Konka, TCL, Haier and more. Can replace these models of 3D glasses: TDG-BT500A, TDG-BT400A, SSG-5100GB, TY-ER3D4MU, AN3DG40 and more. [Easy to Use] Rechargeable design 3d RF glasses, with ON/OFF switch. Auto 5 seconds Stand by and 5 minutes Shut Off. Not throwaway 3D glasses. High definition, no ghosting images, no flickering, clearer and more stable than IR signal connection. Providing you a superior 3D visual experience