Shure SLXD2/B58 - Microphone system

Shure Wireless Microphone System Transmitter Transparent 24-bit digital audio Extended 20 Hz to 20 kHz frequency range (microphone dependent) 120 dB dynamic range Digital predictive switching diversity Operating range of 100 m (300 ft.) 44 MHz tuning bandwidth (region dependent) 32 available channels per frequency band (region dependent) Up to 10 compatible systems per 6MHz TV band; 12 systems per 8 MHz band Easy pairing of transmitters and receivers over IR scan and sync Up to 8 hours from 2 AA batteries. Upgrade to the optional Shure SB903 Lithium-ion rechargeable battery to monitor battery charge status in hours and minutes, as well as battery life and health statistics.