Product Details: Get your semi truck Ready for the Road Ahead™ with a reliable CB for both daily and emergency use, with the Accessories Unlimited 4-Pin Dynamic Lo-Z Noise Cancelling Microphone. Due to its noise-canceling design, this powerful microphone is the ideal choice to communicate with other truck drivers or emergency personnel. Engineered with quality components to offer an extended range and clear connection to multiple channels, AM/FM stations, and frequencies. <br/><br/>FleetPride is your First Click in Heavy Duty®.