Type: 3G Bluetooth 5.0, 4 times speed Function via Bluetooth-enabled devices No functional limitations of the car radio Allows you to connect an external o source Stream o from your smartphone to your car stereo Pair your phone with the Bluetooth module and select Aux on your radio Easy installation, Plug & Play Connect easily via Bluetooth without complicated wiring Specification: Type: Bluetooth o Receiver Material: ABS Color: Black Compatibility: For A3, A4 B8, B6, A6 C6, B7, C6, C5, C7, Q5, A5, A7, R7, S5, Q7, A6L, A8L, A4L Installation: 1. Connect the black cable to the 3G system. Ensure Aux is enabled (switch to "media" and "aux") 2. Plug into the CD player jack (confirm correct socket). Connect your mobile phone to the Bluetooth module, select aux o source, and play music from your phone Package includes: 1 x Bluetooth Module 4 x Installation Tools Note: Please confirm your car has an AMI Music Interface, typically located in the armrest box or storage compartment. Without this interface, the product will not function. Compatibility with the listed car models is not guaranteed. Please verify that the connector fits your vehicle before purchase. Removal of the stereo may be required for installation. The package includes only the items listed; other accessories are not included. Due to lighting and display differences, the color in the image may vary slightly from the actual product. Measurement error allowed is +/- 1-3 cm.