This earpiece is very good, it works and sounds great and I am very pleased with it. The cord is longer than I am used to but that is no problem.
D-Style earpiece (ear hook / hanger) with microphone and push-to-talk. Loud, clear audio. For use with Vertex single-pin radios VX-231, VX-351, VX-354, VX-451, VX-454, VX-459, EVX-531, EVX-534, EVX-539.
Replacement for Vertex MH-37A4B earpiece.