Shure QLXD24/KSM8B G51, Digital UHF Wireless System with Dynamic Capsule KSM8, Frequency band: G51 (470-534 MHz), 24 Bit / 48 kHz audio signal, AES-256 encryption for secure transmission, Up to 72 MHz bandwidth, 22 Compatible channels in an 8 MHz TV band, Switchable transmitting power: 1/10 mW, 120 dB dynamic range, Metal handheld transmitter with dynamic Dualdyne KSM8 microphone capsule, Polar pattern: Cardioid, 9.5"" Metal receiver, Detachable BNC antennas, Ethernet connection for monitoring and configuration of the system, Frequency transmission over infra red interface, Output: XLR / jack, Transmitter operates with 1.5 V AA batteries - also available with SB 900 lithium ion battery, Including PS23 power supply and rackmount