Check the listing for details. GTD Audio 4x800Ch Diversity Wireless Handheld Lavaliere Headset Microphone 787HL. Condition: New. Listed at 329.00 USD. G-787HL 4x800 Channel UHF PLL Microphone System Brand New MSRP: $999.00 Gtd-Audio's G-787 wireless microphone system delivers superior sound quality and professional features. It is designed for a wide range professional application with 4x800 selectable frequency channels, automatic frequency scanning, true diversity operation, Tone Lock squelch circuit, automatic transmitter setup. It's the perfect for professional use at any events. Features Backlit LCD display showing RF level, AF level, Channel Frequency and mute status. 800 Selectable frequencies on each channel, multiple units can be used simultaneously True diversity operation for increased range/reliability, reducing dropouts. Built-In Tone Lock Squelch circuit protection from RF interference Automatic frequency scanning to find and set the best available channel Automatic transmitter setup, the channel of the transmitter and receiver can easily synchronize Four channel receiver, Four microphones can be used at the same time Four XLR individual outputs and one 1/4" Mixed output Individual volume control on each channel Frequency: UHF 550MHz - 590MHz for The US customers ( Comply with FCC new frequency rule ) Frequency Response: 35Hz~18KHz Battery Life: 12 Hours ( AA batteries ) Range: Up to 450 feet ( 150 meters ) Rack mountable, Fits 19" rack Package includes: (1) Four channel UHF diversity receiver (2) Handheld mics and Lapel, Headset mics (1) 1/4" audio cable (1) AC-CD 110V-240V universal adapter (1) manual Warranty One Year Warranty Covered by GTD Audio ( USA ) Inc