Adjustable?? Flexible?? Boom-Style?? Noise-Canceling Microphone Provides Optimum Voice Clarity Level and Reduces Background Noise</br>Hands-Free?? Over the Head?? Comfortable and Lightweight Design</br>Reversible for use with Either Ear?? right or left</br>Convenient In-Cord Volume Control & Mute Switch with a 4 foot cord and lapel clip for unfettered movement</br>Uses standard 2.5-millimeter jack?? designed for use with almost all cordless phone</br></br>Product Description</br></br>Panasonic Headsets Adjustable rotate the boom mic for use on either the left or right ear Noise cancelling microphone for clear calls Mute switch to silence your own voice during calls Volume control for adjusting the volume level of the other party's voice during calls Comfort fit Headsets Lightweight and flexible boom microphone Folding design that makes it easy to carry the Headsets around 4ft (1.2m) Cord</br><br/>http://www.amazon.com/gp/product/B005JZMGM6