A clever idea to provide a receiver that is battery powered and is the size of a standard belt pack. So if you have application where there is no more power sources or you are using a battery powered speaker, then you can stay totally mobile with this radio microphone set. This set is supplied with a hand microphone. The receiver is very small and simply plugs into your mixer or powered speaker using a 1/4" jack. The signal is transferred using ultra high frequencies; this will give better results than VHF solutions.