The frequency-agile Concert 88 Handheld allows for up to 16 systems to operate simultaneously (region dependent) with up to 300' 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.