Concert 288 systems allows for up to 24 systems (48 performers) to operate simultaneously across two frequency bands (region dependent). The Concert 288 gives both performers an impressive 300-foot range of wireless operation between the transmitters and receiver, making the system ideal for large stages and crowd participation. To ensure interference-free performance, the Concert 288 features a true diversity design. If a drop out does occur, the receiver’s Tone Key and Auto Mute functions eliminate any background noise until the signal is restored. SPECIFICATIONS: 1 x CR288 Receiver 2 x CB288 Beltpack Transmitters 2 x LM5 Lavalier Microphones 2 x HS5 Headset Microphones AVAILABLE COLOURS: WHAT'S IN THE BOX?: 1 x CR288 Receiver,2 x CB288 Beltpack Transmitters ,2 x LM5 Lavalier Microphones 2 x HS5 Headset Microphones and Manual.