Shure SLXD24E/Beta58 S50, Digital UHF Wireless System, Frequency range: S50 (823 - 832 and 863 - 865 MHz), Handheld transmitter with dynamic Beta58A microphone capsule, Polar pattern: Supercardioid, Frequency range: 50 - 16,000 Hz, Max. SPL: 140.5 dB, Switching bandwidth: 44 MHz, 12 Compatible channels per 8 MHz band, 24 bit/48 kHz Frequency range, Dynamic range: 120 dB, Switchable transmitter power: 1 mW / 10 mW, Frequency transmission via infrared interface, XLR/Jack out, Transmitter powered by 1.5 V AA batteries or optionally also with Li-Ion battery SB903 (Article Nr. #499632# - not included), Includes 19