Heavy Duty ProComm Amplified Premium Power microphone for President CB and Amateur radios. Makes your modulation stronger and louder than the regular stock mic. Fits most CB Radios with 6-pin screw in mic plug, from President and Uniden, including Walker, Johnson, Bill, Taylor, Lincoln, McKinley, 880, 980SSB and more.. NOT Compatible with Ranger/Galxy. Set Radio Mic Menu setting if available, to Dynamic For Best Sound Quality. Black 9ft coiled cord, Requires 1 Optional 9V battery.