Product details:

The SLXD2/B87A, featuring the Beta 87A interchangeable microphone capsule is the choice for confident speech presentation and vocal performance - from lecture halls to live entertainment. SLX-D Digital Wireless delivers transparent, 24-bit digital audio and rock solid RF performance with easy setup and rechargeability options in a suite of versatile wireless system configurations. Featuring industry-leading digital wireless technology and design, the SLXD2 easily syncs with a wireless receiver. A variety of interchangeable vocal microphone choices guarantees the right solution for a wide range of applications, from day-long presentations to nighttime performances. Transparent 24-bit digital audio. Extended 20 Hz to 20 kHz frequency range (microphone dependent). 120 dB dynamic range. Digital predictive switching persity. 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 SB903 Lithium-ion rechargeable battery to monitor battery charge status in hours and minutes, as well as battery life and health statistics. Rugged metal construction.