The Astatic 636L-C Chrome Noise Canceling Microphone is a dynamic microphone designed for use with CB radios. It features a rugged construction and is compatible with brands like Cobra and Galaxy. With wired connectivity and a 4-pin design, this microphone offers reliable performance for professional audio applications. The Astatic 636L-C is a high-quality microphone that provides clear sound quality and noise cancellation capabilities, making it a popular choice for those in need of a durable and effective microphone for their musical instruments or gear setup.