The SLXD25/SM58 Portable digital wireless handheld system delivers transparent, 24-bit digital audio and rock-solid RF performance for videographers, ENG and field production, film and location sound applications. Operate up to 32 compatible systems per 44 MHz band, with easy setup and optional rechargeability accessories. The SLXD2 features interchangeable microphone capsules for use with a wide selection of Shure vocal microphones. Includes SLXD2 handheld wireless transmitter with SM58 Cardioid Dynamic Vocal Microphone, SLXD5 single-channel portable receiver, two zippered carrying pouches and two pairs of AA alkaline batteries.