For use with Vertex Flare Compact mini size speaker microphone with super rugged PTT switch, swivel clothing clip and heavy duty coil cord. VX-418 VX-400, VX-410, VX-420, VX-414, VX-417, VX424, VX427, VX-428, VX-429, VX-450 series VX451, VX454, VX459, etc.
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