This Bluetooth headset from Cobra is the solution for hands-free driving. Plug the Bluetooth accessory into any 4-pin microphone jack and the headset can sync with your CB radio and/or cell phone. Once synced you can use voice calling, adjust the call volume and put calls on hold while you speak through the CB radio. The kit also includes a remote push-to-talk button that can be mounted in a variety of easy-to-reach locations. Whether you're a professional driver or going cross-country in your RV, this Bluetooth headset is an easy solution for hands-free driving!