The 3M™ PELTOR™ Flexible Boom Speech Microphone, MT33/1, is for use on the 3M™ PELTOR™ Protective Communication Headsets that accept a dynamic speech microphone. The MT33/1 speech microphone is noise-canceling and resistant to wind noise. With an IP68 rating, the MT33/1 speech microphone is water and dust proof for reliable performance in demanding conditions. The 3M™ PELTOR™ Brand is a respected global leader in hearing protection and communication solutions. With production facilities in several countries including the US, 3M PELTOR supplies innovative solutions to numerous industries worldwide including elite tactical military teams and law enforcement agencies. The PELTOR brand is built tough for the working professional. Details - For use with select 3M™ PELTOR™ Headsets for reliable and clear communication in noise - Ruggedized for use in challenging weather conditions - Fully adjustable flexible boom allows for easy movement and individualized placement - Water and dust-proof (IP68)