Panasonic Hands-Free Headset with Noise Cancelling Microphone, Comfort Fit Headband, Mute & Volume Control for The KX-TGA950B - KX-TG9541B & KX-TG9542B Link2Cell Bluetooth 2-Line Cordless Phones Adjustable, Flexible, Boom-Style, Noise-Canceling Microphone Provides Optimum Voice Clarity Level and Reduces Background Noise Hands-Free, Over the Head, Comfortable and Lightweight Design Reversible for use with either ear, right or left Convenient In-Cord Volume Control & Mute Switch with a 4 foot cord and lapel clip for unfettered movement Uses standard 2.5-millimeter jack, designed for use with almost all Panasonic cordless phones