The Rugged Speaker Hand Mics are built tough for heavy duty applications. The unit features a conventional side-mounted Push-to-Talk button for ease of operation. Built to last in your extreme environments such as Police, Fire/Safety, Emergency Services, Racing, Industrial, Security, Heavy Equipment Operators, and other places where you need to be heard. Loud front firing speaker Submersible Tough Polyurethane coil cord Easy grip Push To Talk Large rotating clip Clear noise canceling mic HM-HX370 / HX400 Hand Mic Application/Fitment: Yasau HX370/ HX400 hand held radios. Yaesu HAM (amateur) radio with single pin screw in connector – VX-7R, VX-8R, VX170, etc.