The product consists of 2 Shure QLXD4 G50 Wireless Receivers and 2 Shure QLXD1 Bodypack Transmitters, designed for live performance setups. These wireless microphones offer reliable connectivity and are perfect for musicians, public speakers, and audio engineers looking for high-quality sound reproduction without the hassle of cables. The rack-mountable form factor of the receivers makes them easy to set up and operate, while the bodypack transmitters provide freedom of movement for performers. With the trusted Shure brand and wireless technology, these microphones are a popular choice for professional audio setups. Items are used, in great working condition.