Enjoy the clarity performance and power of this CB microphone. The Astatic 4 pin Road Devil Amplified noise Canceling Microphone features a high gain amplifier with electronic equalization to provide maximum talk power and intelligibility even under noisy conditions. Compatible with modern radio transceivers. The mic helps cut out the background noise. Convenient coil cord stretches to 7 feet., Features a High Gain Amplifier with Electronic Equalization, Provides Maximum Talk Power & Intelligibility even Under Noisy Conditions, Designed for Close Talking Handheld Applications, For CB Amateur Radio and SSB Communications, Amplifier and 6 Wire Cable, Uses a Standard 9-Volt Battery (Not Included), , , , , Weight (lb)0.65, Height (in)10.25,Width (in)8.3,Depth (in)2.9