SPEAKER MIC & COVERT EARPIECE FITS VERTEX TWO WAY RADIO (RS-ACC-Y4). This earpiece is compatible with Vertex EVX261, EVX531 EVX534 EVX539 VX146 VX160 VX180 VX400 VX231 VX241 VX246 VX261 VX264 VX351 VX354 VX414 VX424 VX417 VX424 VX451 VX454 VX459.
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