RF , Active Shutter RF Rechargeable Suitable for RF 3D TV Projectors, RF 3D Eyewear for Sony Epson Toshiba Sharp, Compatible with TDG-BT500A, SSG-5100GB, AN3DG40Tips for RF : Please make sure the distance between the and the 3D device is less than 19.5 inches/50 cm when pairing. Press the switch button, the green LED indicator will light up continuously for 3 seconds, the glasses are powered on, and pairing will start. Some brands of 3D devices will display " connected", which means the pairing is successful; some brands of 3D devices will not display anything, but after pairing, the work normally, which means the pairing is successful. If pairing fails, the will automatically turn off. You can press and hold the switch button for more than 1 second to re-enter the pairing state.RF 3D Active Shutter Glasses Specifications: type: Active shutter glassesSync: RFReceiving distance: 6 meters (type)Display Compatibility: 3D RF TV/3D RF ProjectorResponse time: 2ms0.5msAmbient temperature: 0C - 50CStorage temperature: -30C - 70CWorking humidity: 20%-80%RHAtmospheric pressure: 86 kPa - 106 kPaSize: AdultRatio: 1000:1200Field Rate: 148 HzWorking current: