Heavy Duty ProConm Amplified Power microphone for CB and Amateur radios. Makes your modulation stronger and louder than the regular stock mic. Fits most ;4-pin screw in radios from Cobra, Galaxy, Uniden, Superstar, Connex , President and many others. Can be Rewired with a different optional plug by a qualified person to fit other radio types. Black 9ft coiled cord, Requires 1 Optional 9V battery.