Shure SLXD14E/83 H56, Digital UHF wireless system, Frequency range: 518-562 MHz, With black WL183 lavalier microphone, Microphone polar pattern: Omnidirectional, 24 Bit / 48 kHz audio transmission, 120 dB dynamic range, 44 MHz switching bandwidth, Switchable transmission power 1 mW / 10 mW, 12 Compatible channels per 8 MHz band, Frequency transmission via infrared interface, XLR / jack output, Pocket transmitter with TA4M connection, Transmitter operation with 1.5V AA batteries, optionally also with Li-Ion battery SB903 (not included), Includes 19