Concert 88x Presentation System Highperformance professional wireless system 100 operating channels across 25 MHz bandwidth Up to 8 systems can be used simultaneously per frequency band region dependent 300 operating range lineofsite Rackmount kit included CR88x Wireless Receiver Onetouch automatic frequency scan finds the best operating channel Two digit LED display Infrared link locks the receiver and transmitter to the same channel True diversity design minimizes dropouts Tone key and auto mute prevents unwanted noise when transmitter is off or out of range Balanced XLR and unbalanced 14 outputs CB88 Beltpack Transmitter Adjustable input gain Silent mute button PowerMute status indicator Metal belt clip Up to eight hours of continuous use from two AA batteries LM5 Lavalier Microphone