1 Headset Adapter U94 PTT. For Vertex VX-160 VX-180 VX-210 VX-231 VX-261 VX-264 VX-351 VX-354 VX-410 VX-420 VX-424 VX-450 VX-451 VX-454 VX-459 EVX-261 EVX-531 EVX-534 EVX-539.
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