Long Distance 1.2GHz 2W Audio Video Transmitter Receiver FPV For RC Helicopter Input Voltage:12V Transmitting Frequency:HC1:1080 HC2:1120 HC3:1160 HC4:1200 HC5:1240 HC6:12 HC7:1320 HC8:1360(MHz) Receiving Frequency:0.9~1.2GHz Channel:8Ch, AV synchronization