Y-Harness for mounting a boom microphone to the right earcup and enabling connection to a PTT adapter for two-way radio communication 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 both traditional over the ear and innovative in-ear solutions to industry worldwide as well as elite tactical military teams and law enforcement. The PELTOR brand is built tough for the working professional.