NEW old stock Vanco CB5DP dynamic power microphone. 5 Pin DIN connector fits select models of Cobra and other radios with DIN microphone jack. Power microphone to boost audio. Adjustable gain. 4Ft coiled microphone cable. Black color. Requires 1.5VDC AA Battery (not included) Compatible radio models: Cobra 19 Plus, 19X, 19XS, 23 Plus NOT compatible with the Cobra 19, 19 DX III, DX IV, 19 GTL, 19 LTD, 19 Ultra This microphone is NOT compatible with Realistic Radio Shack CB radios WIRING: (5 pin DIN connector) Pin 1 - Audio Pin 2 - TX / PTT Pin 3 - No connection Pin 4 - Audio Shield & Ground Pin 5 - RX Visit our eBay store for other radio accessories.