Panasonic Hands-Free Headset with Foldable Comfort Fit, Lightweight Headband & Flexible, Optimum Voice Microphone For The Panasonic KX-TGA430B - KX-TGA450B & KX-TG4500B 5.8 Ghz 4-Line FHSS Expandable 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 4 foot cord and lapel clip for unfettered movement Uses standard 2.5-millimeter jack, designed for use with almost all cordless phone