Featuring a SM58 handheld wireless microphone transmitter and SLXD4 Digital Wireless Receiver, SLXD24/SM58 combines professional features with simplified setup and operation. 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 conference to night-time performances.SLXD2 Digital Wireless Bodypack Transmitter Transparent 24-bit digital audio 120 dB dynamic range Digital predictive switching diversity Easy pairing of transmitters and receivers over scan and IR sync Up to 8 hours from 2 AA batteries or optional Shure SB903 rechargeable battery TQG connectivity offers a variety of microphone options Ergonomic, durable plastic construction SLXD4 Digital Wireless Receiver Transparent 24-bit digital audio 120 dB dynamic range Digital predictive switching diversity Up to 10 compatible systems per 6MHz TV band; 12 systems per 8 MHz band Easy pairing of transmitters and receivers over scan and IR sync Rugged metal construction