Usage Tips:Audio AUX Cable Adapter Bluetooth External MIC For CD30 CDC40 CD70 DVD90 The product supports efficient music transmission, version 5.0, compatible with the following versions If the call comes, you can answer the call, the sound effect is clear. Just plug the connector into the socket back of your radio (Nondestructive installation plug) You can just Insert this item to the back radio then Connect the red wire to 12V, the black wire to 12V-. Match your phone or pad to bluetooth module. And Choose Aux from your radio, then you can use your phone to through car speakers. You can hear music from your phone / pad / mp3 (They should have blueooth function). Bluetooth version:5.0 (compatible with the following versions) Product voltage:5-12V Compatible with manufacturer / model: Flat pin connection To the device with 40pin flat pin connector. For A from 2004 For from year 2006 For H from 2004 For Combo C from 2004 For C from 2004 For D from 2006 For Meriva A from year 2005 For Movano A from 2006 For from year 2003 For Tigra TwinTop from year 2005 For C from 2005 For Vivaro from 2006 For B from 2005 Related to the following radios: CD30 MP3 (only with AUX, see pin assignment on the radio) CDC40 Opera CD60 Navi DVD90 Navi Colour:Black Material:plastic+copper Size:Microphone cable length:1.5 meters () Package Contents: 1 * Bluetooth Adapter 1 * Microphone Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.