Shure SLXD1 G59, Digital UHF Pocket Transmitter from The SLXD Series, Frequency range: 470 - 514 MHz, 24 Bit / 48 kHz audio conversion, 120 dB dynamic range, TA4M connection, Switchable transmission power: 1 mW / 10 mW, 44 MHz switching bandwidth, External charging contacts, Operation time: Up to 8 hours, Can