Shure QLXD14/98H H51, Digital UHF Wireless System with Pocket Transmitter and Instrument Clip Microphone, Frequency band H51: 534 - 598 MHz, 24 Bit / 48 kHz audio signal, AES-256 encryption, Up to 72 MHz bandwidth, 22 Compatible channels in an 8 MHz TV band, Switchable transmitter power 1/10 mW, 120 dB dynamic range, Metal pocket transmitter with 4-pin TQG connector, Beta98 H/C condenser instrument microphone, Directional characteristic: Cardioid, 9.5"" Metal receiver, Detachable BNC antennas, Ethernet connection for monitoring and configuration of the system, Frequency transmission via infrared interface, XLR / jack output, Transmitter operates with 1.5 V AA batteries - also available with SB 900 lithium ion battery, Includes PS23 power supply and rackmount