The ChatterVox Ruggedized Headset Microphone is designed for more rugged use. It’s sweat and moisture resistant, with the adjustable headband it stays put even during exercise. It is comfortable and stays put regardless of how you move or turn your head. The microphone is worn behind the head and over both ears. The adjustable boom can be positioned in the corner of your mouth. this microphone is ideal for aerobic instructors, coaches, police and military applications.