Panasonic Hands-Free Headset with Foldable Comfort Fit Lightweight Headband & Flexible Optimum Voice Microphone with Volume Control & Mute Switch For The Panasonic KX-TGP500 & KX-TGP550 DECT 6.0 Cordless Phone System 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 cordless phone