PROFESSIONAL SOUND QUALITYBY-GM18CB features an excellent cardioid polar pattern that clearly captures the sound in front of the microphone and is designed to provide clear and easy-to-understand voice reproduction for lectures, video conferences, meetings and more. ADJUSTABLE GOOSENECK MIC18-inch bi-fold gooseneck offers more convenience. You can adjust the microphone direction and angle easily and conveniently to cope with desktops of different heights and widths. MULTIFUNCTIONAL MIC BASEBase with Anti-slip foot pad, Push to talk switch,ON/OFF status is clearly indicated by the LED ring. You can also press the PUSH button to detach the gooseneck for better storage and carrying.' MIC POWER SOURCEBY-GM18CB can be powered by 2 AAA batteries(Not included) or XLR 48V Phantom power.Insert the gooseneck connector into microphone base surface XLR connector. Connect microphone base to mixer, amplifier, etc.