Feature 1A wonderful replacement for 5 Series E39 with SA 661650 and other models to accurately and conveniently meet your needs. 2You can use your device to play music through car speakers through matching your device to bluetooth and choosing Aux from your radio. 3You can hear music from your device with blueooth function, and answer calls with bluetooth 5.0, enjoy clear sound and stable connection. 4Compatible with Bluetooth 5.0 protocol, backward compatible with 2.0 3.0 4.0 other versions of Bluetooth protocol. Simple to use, plug and play. 5Support familiar MP3 format audio, and support for WMA, for WAV, for FLAC, and other highquality audio format decoding. 6Applicable to DSD largecapacity transmission, stable data transfer between devices, fidelity, designed for music enthusiasts.Item Type: Microphone AdapterMaterial: ABSVoltage: DC12VBluetooth: Bluetooth 5.0Microphone Cable Length: Approx. 150cm/59in (manual measurement will have errors)Fitment: Replacement for 5 Series (E39 with SA 661-650) 2002 - 2014Replacement for 5 Series (E60, E61) 2002 - 2014Replacement for 6 Series (E63, E64) 2002 - 2014Replacement for Z4 Series (E85 with SA 662) 2002 - 2014Replacement for X3 Series (E83 with SA 662) 2002 - 2014Replacement for X5 Series (E53 with SA 661-650) 2002 - 2014 .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Car Microphone1 x AUXBluetoothAdapter