The RoadPro 4-Pin Noise Cancelling CB Microphone is a high-quality microphone designed for radio communication. It features noise cancellation technology to provide clear and clean audio transmission. This unit is compatible with universal brands and models, making it a versatile choice for various radio communication devices. The microphone also comes with a clip mount for easy attachment and a 12V voltage requirement for optimal performance. Made in China, this new old stock item offers a convenient solution for improving the audio quality of your CB radio system. Please see photos for precise box condition and microphone features. Item is untested as it is in original package.