The BOYA Desktop Cardioid Gooseneck Microphone is an ideal choice for lectures,conferences and meetings. With excellect cardioid polar pattern,the GM18CB can clearly capture the voice in front of the mic,designed to provide clear and intelligible speech reproduction for lectures,video conferences,meetings,and more. The BY-GM18CB’s shaft features upper and lower goosenck sections that enable you to precisely position the capsule in front of the speaker for optimal sound.ON/OFF status is clearly indicated by the LED ring below the mic capsule. The BOYA Desktop Cardioid Gooseneck Microphone can be powered by 2 AAA batteries or XLR 48V Phantom power