Wireless System designed for presentations, multi-instrumentalists, and active performers. The wireless system offers analogue wireless transmission and includes the BLX1 bodypack transmitter, BLX4RE wireless receiver, and the PGA31 headset microphone. The BLX4RE receiver comes with a rack mount kit and removable antennas for quick and intuitive operation. The BLX system range prides itself on professional sound that is easy and efficient to setup, giving you the freedom to perform with quality. Frequency: 662-686 MHz