Features Backlit LCD display showing RF level, AF level, Channel Frequency and mute status. 100 Selectable frequencies on each channel, up to 20 units can be used simultaneously Built-In Tone Lock Squelch circuit protection from RF interference Automatic transmitter setup, the channel of the transmitter and receiver can easily synchronize Dual channel receiver, Both microphones can be used at the same time Two XLR individual outputs and one 1/4" Mixed output Individual volume control on each channel Frequency: UHF 682695MHZ Frequency Response: 45Hz18KHz Battery Life: 12 Hours (AA batteries) Range: Up to 320 feet (100 meters) Rack mountable, Fits 8.27" rack. Package includes: (1) Dual channel UHF receiver (2) fitness headset microphones & beltpack transmitter (1) 1/4 audio cable (1) AC-DC adapter (110V-240V universal) (4) Manual. The item "UHF Dual Wireless Fitness Headset Microphone for Fitness Instructor Sports Gym" is in sale since Sunday, July 15, 2018.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.