MODEL NUMBER(S) MARKED ON THIS ITEM IS: 22D. Mic audio is wired shield + white. P.T.T Switch is wired to Shield + Blue. Item is tested and working, Includes a 6' Belden 9463 shielded pair cable. WHAT WAS TESTED ON or WITH THIS SPECIFIC ITEM: Tested audio on sound system Tested PTT on continuity tester.
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