Bluetooth 5.0 version, also support 4.0 /3.0 /2.0. Non-destructive installed in your car.Just plug one end of this cable into the CD changer input in the back of your stereo.Choose AUX from your radio and you can play music from your phone in your car.Match your phone or pad to bluetooth module.and Choose Aux from your radio, then you can use your phone to play music through car speakers.You can hear music from your phone/pad/mp3(They should have Bluetooth function).Fitment: for CD30 MP3, CDC40 OPERA, CD70 NAVI, DVD 90NAVI in Astra models: 2004-2009; Zafira: 2005-2011; Tigra: 2004-2009Voltage: 12VInterface: BluetoothItem Type: Cables, Adapters SocketsMaterial:ABScolour:blackPackage Contents:1 x Audio Cable AdapterOnly the above package content, other products are not included.Note: Light shooting 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.