A. Opel CD30, CDC40, CD70, DVD90 audio AUX cable adapter with external Bluetooth microphone B. It has certain quality. C. This product can support music transmission. It has Bluetooth version 5.0 and is compatible with the following versions. D. You may answer calls when there is an incoming call, and the sound effect can be clear. E. You can insert the connector into the socket on the back of the radio (with a non - damaging installation plug). F. You can insert the product into the back of the radio, then connect the red wire to 12V and the black wire to 12V -. G. You can pair your phone or tablet with the Bluetooth module, select AUX on the radio, and play music from your phone through the car speakers. H. You can listen to music from your phone, tablet, or MP3 (which needs to have Bluetooth functionality). I. Bluetooth version: 5.0 (compatible with the following versions) J. Product voltage: 5 - 12V K. Compatible manufacturers/models: - Flat - pin connection - Suitable for devices with a 40 - pin flat - pin connector - Suitable for Opel Astra A since 2004 - Suitable for Opel models since 2003 - Suitable for Opel H since 2004 - Suitable for Opel Combo C since 2004 - Suitable for Opel Corsa C since 2004 - Suitable for Opel Corsa D since 2006 - Suitable for Opel Meriva A since 2005 - Suitable for Opel Movano A since 2006 - Suitable for Opel Tigra TwinTop since 2005 - Suitable for Opel C since 2005 - Suitable for Opel Vivaro since 2006 - Suitable for Opel Zafira B since 2005 L. Related radio models: - CD30 MP3 (with AUX only, see the pin assignment on the radio for details) - CDC40 Opera - CD60 Navi - DVD90 Navi M. Color: Black N. Material: Plastic + Copper O. Dimensions: The length of the microphone cable is 1.5 meters. P. Package contents: - 1 Bluetooth adapter - 1 microphone - Only the above items are included in the package, and no other products are included. Q. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual product. The allowable measurement error is +/- 1 - 3 cm.