The Panasonic KX-TCA430 headset is designed for use with any cordless phone possessing a standard 2.5 mm jack. This device allows you to talk hands-free while you work. Its boom-style microphone adjusts easily to fit multiple users. The KX-TCA430 is reversible, lightweight, and delivers a comfortable fit that is sure to please any user. The headpiece fits securely around your head and folds down neatly for compact storage. With the lightweight headset you are able to move around with ease. Features: Adjustable - rotate the boom mic for use on either the left or right ear Noise canceling 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 headset Lightweight and flexible boom microphone Folding design that makes it easy to carry the headset around 4ft (1.2m) Cord