1.The microphone has video tracking ,voting(five key) and   discussion functis.
2.The microphone unit has built-in high fidelity of capacitor sound head,   its sound quanlity is clear and low noise,it has strong pickup of   distance.
3.It has uppression the howling function,when the microphone is turn on,   the loundspeaker will be automatically turn to prevent the voice   transfusion.
4.The unit has built-in speaker and headphone jack,it can play background   music and expansion the voice.
5.The annular blue indicator lamp can show the working sate on the   microphone.