Featuring a WL185 Cardioid TQG Lavalier Microphone, SLXD1 Digital Wireless Bodypack Transmitter and SLXD4 Digital Wireless Receiver.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 SLXD1 easily syncs with a wireless receiver. TQG connectivity to a variety of microphone options guarantees the right solution for a wide range of applications, from day-long conference to night time performances. WL185 Cadioid TQG Lavalier Microphone Wide dynamic range and frequency response for accurate sound reproduction across the audio spectrum Interchangeable cartridges that provide an optimal choice for each application Rotatable tie-clip that pivots in 90 degree increments for placement flexibility Supplied snap-fit foam windscreen that controls breath noise and stays on securely Supplied dual tie clip holds two microphones for dual miking applications SLXD1 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