The Concert 288 All-In-One features a CH288 Handheld Transmitter with a Q6 Dynamic Microphone capsule, as well as a CB288 Beltpack Transmitter. To pair with the CB288, system also includes both an LM5 Lavalier Microphone and an HS5 Headset Microphone (both with locking connectors). These mic options bring maximum versatility to any dual-user application, particularly duet performances, as well as audience participation and interview situations. The transmitters, which can operate for up to eight hours on two AA batteries each, are engineered to the finest detail to provide the ultimate in sound reproduction.With Samson's Concert 288 All-In-One Wireless System, advanced technology and total versatility combine to provide high-quality wireless performance wherever singers, presenters, educators and others need it.