SUNDELY FBI Style Covert Acoustic Tube Headset Earpiece Mic For Yaesu Vertex Radio 3.5mm 1-pin 4 Pole VX-231 VX-424 VX-427 VXF-10 VXF-20 VX-10 VX-180 VXF-1 VXT-10 VXT-20 (122-071) FBI Style Covert Acoustic Tube Headset Earpiece Mic For Yaesu Vertex Radio 3.5mm 1-pin 4 Pole, 1 spare earbud included. Hidden mic in PTT button VX-1R, VX-2R, VX-3R, VX-5R, VX-10, VX-110, VX-130, VX-131, VX-132, VX-150, VX-160, VX-168, VX-180 VX-210, VX-210A, VX-228, VX-230, VX-231, VX-298, VX-300, VX-350, VX-351, VX-354, VX-400, VX-410, VX-418, VX-420, VX-424, VX-428, VX-429, VX-450 VXF-1, VXF-10, VXF-20, VXT-10, VXT-20, FT-10R, FT-40R, FT-50R, FT-60R