The frequency-agile Concert 88 system allows for up to 16 systems to operate simultaneously across two frequency bands w/up to 300 feet separating the receiver and transmitter. At the core of the system is the CR88 Wireless Receiver. Featuring a true diversity design, the CR88 minimizes signal dropouts during performance. If a dropout does occur, the CR88's tone key and auto mute functions eliminate any background noise until the signal is restored. The CR88 receiver's front panel provides a Select button for auto syncing receiver and transmitter channels via an infrared signal. The panel also features a 7-segment Channel LED, Volume knob, Power button, two tuned antennas, as well as Audio and Ready indicators, for optimal functionality and monitoring. Balanced XLR and 1/4" outputs can be found on the receiver's back panel. The Concert 88 Presentation System features the CB88 Beltpack Transmitter and LM5 Lavalier Microphone w/a locking connector. The transmitter, which can operate for up to eight hours on two AA batteries, is engineered to the finest detail to provide the ultimate in sound reproduction. w/Samson's Concert 88 Presentation System, advanced technology and total versatility combine to provide high quality wireless performance wherever business professionals, educators and others need it.