Avantree Cara is a Bluetooth stereo hands free car kit. It integrates your phone with a car audio system wirelessly. You can plug it directly into a vehicle"s AUX input for hands free calls and streaming audio. It is elegant, easy to use and has high quality stereo music support. It incorporates the latest Bluetooth technology(V4.0), echo and noise cancellation, as well as high definition music apt-X technology. It supports multiple devices at the same time, and is small, easy to carry and rechargeable.