Function via Bluetooth-enabled devices, no functional limitations of the car radio. Allows you to connect an external audio source. The product is specially made according to the car port, a wireless Bluetooth music product suitable for car. Adopt Bluetooth 5.0 protocol, backward compatible with 2.0 3.0 4.0 other versions of Bluetooth protocol, can support common MP3 audio, also support WMA, WAV, FLAC and other high-quality audio decoding, non-general common Bluetooth function, can support DSD capacity transmission, stable data transmission between devices, high fidelity, designed for music enthusiasts. Installation: The adapter is connected invisibly to the back of the radio No additional wiring is needed for power supply It is automatically recognized by the radio as a CD changer, no aux input needs to be unlocked. Fitment: for Opel Agila 2000-2007 for Opel Antara from 2006 for Opel H from 2004 for Opel Combo 2003-2010 for Opel Corsa 2003-2006 for Opel Corsa from 2006 for Opel Meriva from 2005 for Opel Movano from 08/ 2006 for Opel from 2003for Opel Tigra Twintop from 03/2005for Opel Vectra C (from 2005)for Opel Vivaro from 08/2006for Opel Zafira from 07/2005 with the following radio/navigation systems (with AUX function):CD30 MP3CDC40CD70 NAVIDVD90 NAVIColor:blackMaterial:ABSPackage Contents:1 * Audio Cable Adapter1 * Bluetooth Microphone1 * Disassembly ToolThe above package content only, other products are not included.Note: Light and different monitors may cause the color of the item in the picture to look slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.