Pyle 2 Headset, 2 Lavalier Mics, 2 Transmitter, 8 'AA' Battery, Power Adapter-for Karaoke, PA, DJ (PDWM4540) QUAD FREQUENCY CHANNEL: This portable wireless microphone system by Pyle Pro has 4 channel design with broad frequency range for cordless singing to karaoke music and mobility for energetic on stage performances UHF BAND: This mic set features UHF signal audio transmission for an unsurpassed performance with high signal over noise ratio for clear, noise and distortion free, crisp vocals and excellent sound reproduction unlike other low grade VHF units INDEPENDENT MIC VOLUME CONTROL: The unit has an independent adjustable volume control for each channel so you can balance the vocals as desired. Perfect for professional engagements, conference, PA, DJ party MULTIPLE OUTPUT JACK: The rack mountable receiver features 4 individual balanced XLR output jacks to hook up your sound mixer / stereo or speaker and a 1/4" phone plug for other devices. It also has a dual detachable antenna and indicator lights WHAT'S IN THE BOX: The package includes 2 handheld dynamic, 2 headset, 2 lavalier Mics, 2 body pack transmitter, 8 'AA' battery, and power adapter. The device can be used indoor and outdoor, school, classroom, church or at home for personal use