Nady Handheld wireless microphone for U-1100 or U-2100 systems - Band B Compatible with Nady U-1100 and U-2100 wireless systems Features a unidirectional neodymium dynamic cartridge for optimal true sound, maximum feedback rejection and minimal handling noise Touch buttons for On/Off power and Mute allow convenient audio muting with the transmitter on. LCD display (with backlighting) indicates Channel and Frequency Selected, Battery Level status Manually selectable channel with Up/Down recessed buttons or automatically, using the ASC feature. Convenient, economical operation with two AA alkaline or NiMH batteries Sleek housing with internal antenna for durable long life and optimum aesthetics