Covert Style Earpiece with Inline Microphone.
Will fit the following Vertex Handportables Models.
VX-3R, VX-10, VX-110, VX-130, VX-146, VX-150, VX-160, VX-180, VX-210, VX-210A, VXVX-200, VX-231, VX300, VX-351, VX-400, VX-410, VX-414, VX-416, VX-416, VX-417, VX-420, VX-2R, FT50,FT60