Sennheiser XSW 1-ME2 A-Band Lapel Set, Diversity UHF Wireless System, With antenna diversity, Frequency range, A band: 548 - 572 MHz, Bodypack transmitter, ME 2-2 condenser lavalier microphone with omnidirectional polar pattern, 24 MHz switching bandwidth, 8 Frequency banks with 10 channels each, Integrated antennas, Scan function to locate available frequencies, Audio frequency range: 50 - 16,000 Hz, XLR- and jack output, Adjustable squelch, Mic-Line switchable@+*Set includes:*@+@+, 1 SK-XSW bodypack, 1 EM-XSW1 diversity desktop receiver, 1 ME 2-2 microphone, NT 12-5 CW power supply, 2x AA batteries