This is top of the line UHF wireless microphone ! Super clear, the back ground noise is limited to a level that you can hardly hear anything through your clean sound system, the operation range is up to 300 feet. A new technology we use to display the channels and frequencies. You can change the channel or frequency easily by press UP/Down button. From channel 1 to channel 16 or you can change the frequency to match any wireless microphone you have before.