Cobra CAMS4 CB Radio Microphone: Cobra's new CA MS4 remote CB microphone system allows you to talk on your CB radio hands-free. Place the headset on top of your head or around your neck, strategically position the push-to-talk button close to your gear shift or steering wheel, and you will never have to take your hands off the controls of your vehicle while talking on your CB! This mic system is compatible with all 4-pin CB radios and is the ideal solution for drivers who want to talk hands-free. Cobra CAMS4 CB Radio Microphone Features: Dynamic remote 4-pin PTT microphone system for CB radios Noise-canceling technology Adjustable Push-to-Talk Button, Attaches to All Gear Shifters Ergonomic headset with retractable cord Can Be Worn Around the Neck or On the Head Easy to install Cobra CAMS4 CB Radio Microphone Specifications: CB Radio remote noise cancelling boom microphone system Comfortable and ergonomic headset with retractable cord Push to talk button mounts on the gear shift lever for safety and convenience Can be worn on top of head or around the neck Compatible with all 4-pin CB radios Quick and easy installation Includes all mounting hardware