Portable Mini Bluetooth CSR 4.0 Car Kit Receiver A2DP Wireless Adapter One for Two Devices: It can connect to two devices at the same time and provide more options for you. Advance Bluetooth technology: with highly performance CSR 4.0 bluetooth chip, this low consumption receiver can receive the signal at the distance of 10 meters. Built-in microphone: Build-in noise cancellation digital microphone can ensure clear phone call and no call miss. Unique Design: the unique design of water drops shape. Fashion, high class, small, and portable. Easy to operation: Very easy to understand how to use the product. Special way to switch previous or next track, and control volume. Provide optimal performance to you