Bluetooth Handsfree In-car Visor Kit for All iPhone 5 5s 5c 4 4s 3G and 3Gs Models CVC echo/noise reduction for reducing background noise One-touch answer, call rejection, last number redial, adjustable volume Voice dialing function (Voice activation subject to voice activation enabled phones) Easily pairs your mobile phone, Multipoint support, can connect to more than two cell phones. Crisp and clear sound quality, Full duplex and high performance speakers and Big three buttons