4 x 100 channels Professional UHF Diversity wireless Lavalier Headset microphone system Features Backlit LCD display showing RF level, AF level, Channel Frequency and mute status. 200 Selectable frequencies on each channel, multiple units can be used simultaneously Diversity operation for increased range/reliability, reducing dropouts. Built-In Tone Lock Squelch circuit protection from RF interference 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 770MHz - 800MHz Frequency Response: 35Hz18KHz Battery Life: 12 Hours (AA batteries) Range: Up to 300 feet Rack mountable, Fits 19" rack Package includes: (1) Four channel UHF diversity receiver (4) lavalier microphones & 4 headset mic (1) 1/4 audio cable (1) AC-CD 110V-240V universal adapter (1) User's manual. The item "4-Channel Professional UHF Lapel / Lavalier & Headset Wireless Microphone System" is in sale since Tuesday, June 28, 2016.This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Microphones & Wireless Systems". The seller is "promic2012" and is located in GD. This item can be shipped worldwide.