1-Wire Earbud Earpiece Inline PTT for Vertex Standard VX eVerge EVX (See List)

Compatible with Vertex Standard VX10, VX130, VX160, VX180, VX210, VX210A, VX230, VX231, VX261, VX264, VX300, VX350, VX351, VX354, VX400, VX410, VX420, VX451, VX454, VX459, BC95 eVerge - eVX-261, eVX531, eVX534, and eVX539 Handheld Two-Way Walkie Radios.

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