About this item It has a strong twisted cord earphone to twist and tension, and from the microphone to the plug, it has a strong, strong cable, and has a very strong structure due to disconnection. In addition, the earphone is a closed type that is hard to be affected by the noise of the surroundings, so it doesn't leak important communication. Name: Tie-pin type earphone/microphone Model number: MH -62 A4B Features: The MH -62 A4B is a standard (Yaesu Radio) 1-pin threaded jack specific low power transceiver or digital simple radio tie-pin earphone microphone. Tie-pin type earphone microphone that can be worn on the chest. Features a windshield cap on the microphone. High sensitivity type, and the earphone part is detachable. (2.5 φ) Supported Options: Replacement Earphone S 8100802 Compatible modelsVX-6 VX-6R VX-7R VX-170 FT-270 FT-277; Standard Horizon HX210 HX270 HX290 HX370S HX380 HX400 HX400IS HX471S HX750S HX851 HX870 HX890, etc.