Features 1. No Functional Limitation: Operates through Bluetooth-enabled devices with no interference to car radio functions, allowing connection to external audio sources. 2. Strong Compatibility: Utilizes Bluetooth 5.0 protocol, backward compatible with Bluetooth 2.0, 3.0, and 4.0. 3. Easy Operation: Pair your phone or tablet with the Bluetooth module and select Aux on your radio to play music through the car speakers. 4. Durable Material: Lightweight ABS exterior, waterproof and wear-resistant, easy to carry for convenient in-car audio use. 5. Easy Installation: Plug the connector into the socket at the back of the radio; plug-and-play setup for immediate use. Specification Item Type: Bluetooth Module Aux Cable Material: ABS Fitment: Replacement for 5 Series (E39 for SA 661-650) Replacement for 5 Series (E60, E61) Replacement for 6 Series (E63, E64) Replacement for Z4 Series (E85 for SA 662) Replacement for X3 Series (E83 for SA 662) Replacement for X5 Series (E53 for SA 661-650) Compatible with Radio Models: SA 650 (Radio Business with CD drive) SA 661 (Radio Business with CD drive) SA 662 (Radio Business) Package List 1 x Bluetooth Module Aux Cable