4 Channel 2 Cordless Handheld. Mic UHF Wireless Microphone System.(our company m aintenance department is in Brooklyn &Los Angeles). (This Microphone system comply with new FCC frequency rules). 4 Channel Receiver with 2 Cordless Handheld & 2 Lavalier Microphone. Individual Volume Control on each Channel. One 1/4" Mixed and four 1/4" Individual Outputs. Broad frequency response range, super low distortion. Number of Channels:4 channels.