This is the brand new portable handsfree headset made spefically for the Siemens A56 / CT56 / SL56. This handsfree headset has noise-canceling microphone for crystal clear sound, adjustable ear hook for comfortable and secure fitting. Height adjustable clip for precise positioning. With built in push to talk button for conveint use. Please ask all questions before buying. All sales are final. Thanks for looking and check out my store for other great deals.