ChatterVox Ruggedized Headset Microphone with the adjustable headband it

with the adjustable headband it stays put even during exercise

Genuine Tonality Matching (GTM 2

Lightweight Portable Voice Amplifier (about one pound including batteries)

Sensitivity:  -65dB +/- 3dB (0dB = 1V/microbar @ 1 KHz)

Rechargeable Batteries pre-installed

ChatterVox Ruggedized Headset Microphone with the adjustable headband itThe ChatterVox Ruggedized Headset Microphone is designed for more rugged use. Its 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