Features: This wireless microphone system with 4 handheld mics 1 metal construction receiver, is ideal for public speech, business meeting, karaoke, party, wedding, church event, school teaching, etc. 4-channel and UHF frequency band design, providing ultra signal stability, eliminating unwanted distortion and avoiding external interference, and 30-60 meters long range transmission with reliable performance. The rack mountable metal receiver has a 6.35mm audio mixing output to connect to speaker, and 4 balance XLR outputs to connect mixer and other audio device, which will let you get clear, robust and optimal true sound. Each microphone has its own volume control knob on the receiver unit, you can control the volume of the microphone separately to get precise vocal balancing, more flexible to use. The handheld microphones and receiver both have LCD display showing the frequency number, which is helpful for you to use and adjust the microphone system.