Shure QLXD2/Beta58 G51, digital UHF handheld transmitter dynamic Beta58 capsule, 24bit/48 KHz Audiosignal, AES-256 Advanced Encryption Standard encoding, up to 72 MHz bandwidth, 22 compatible channels per 8 MHz TV-Band, switchable transmitted power 1/10 mW, 120 dB dynamic range, metall housing with dynamic Beta58 capsule, supercardioid, IR frequency and setting transmission, XLR/jack out, transmitter works with SB 900 Lithium Ionen rechargeable battery Technology, optional also with 1,5V AA batteries, frequencyrange G51 (470 - 534 MHz), incl. rechargeable battery, bag and clamp