... Stereo audio output, Include patch antenna, Double-frequency channel choice, Use your for ipad own power, without plus ... wireless frequency channels,user can manualy select any one channel,wireless transmission is more steady.Application:Transmit frequency: ... CVBS), L+R audio outpurtTransmission distance:>10 meterDual channel selectableTransmitter power dissipation:<150m WDirect powered by iphone/ipad ...