Yaesu Vertex VC-25 VOX Headset For Select Model HandHeld Transceivers - FT-60R, VX-3R, FT-250R, VX-420, VX-160 ect Fits Ft-60R, FT-50R, VX-3R, FT-1DR, VX-2R, FT-250R, VX-150, VX-110. Fit All Radios that can use the MH-34B4B or MH-37A4B mics. Fits Vertex models VX-10, VX-130, VX-131, VX-160, VX-180, VX-210, VX-410, VX-450 & VX-420 VC-25 VOX Headset - Genuine Yaesu-Vertex Standard Horizon Item. Inline PTT & Built in selectable VOX.