Quick Overview
Motorola MH-66A4B is a submersible speaker microphone for Motorola/ Vertex Standard: Two mounting screws - eVerge EVX-261, EVX-531, EVX-534, EVX-539, VX-130, VX-160, VX-180, VX-210, VX-210A, VX-261, VX-264, VX-300, VX-400, VX-410, VX-420, VX-230, VX-231, VX-350, VX-351, VX-354, VX-451, VX-454, VX-459.