ArticleNo/ P/N: MT731 Radiotype: Peltor 3M 3M™ PELTOR™ Dynamic boom microphone, J22, MT73/1 Dynamic microphone with better speech intelligibility in noisy environments. Backwards compatibility with 3M Peltor dynamic mics. For MT73 series Headsets. For use with 3M™ PELTOR™ WS™ LiteCom Pro III and CH-5 Headset. Price request