The Shure WH20XLR Headset Microphone is a dynamic headset mic including a 3-pin male XLR connector with a detachable belt clip. This microphone provides high-quality, accurate voice pickup and fits securely for active mic users such as fitness instructors and musicians, with discrete visibility.The cardioid (unidirectional) pickup pattern ensures greater gain-before-feedback and further isolation from unwanted ambient noise and other interferences. The meticulously shaped frequency response features a voice-frequency presence peak and a low-frequency roll-off which compensates for the proximity effect inherent in cardioid mics. The lightweight wireframe and elastic headband adjust, making for a secure fit for long-lasting comfort during long periods of use.