Wireless headset and lavalier microphone system; Simple and hassle-free operation; Reliable distortion-free performance; Auto search syncing with beltpack transmitter; LCD digital display screen for frequency read-out; Features 1/4 in. jack for additional connection; Power on/off switch; LED indicator lights; Battery-operated design; Ideal for karaoke, DJ sound and house party audio; Compatible with PA systems, amplifiers, mixers, audio receivers, etc.; Includes beltpack transmitter, receiver unit, headset microphone, lavalier microphone, USB connection cable, 2 AA batteries and 2 AAA batteries;