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Since you have the 640, you should be able to just get the bluetooth module and a microphone. Shouldn't be that expensive at a dealer.
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• 2008 BMW 523i touring (Imola red) • 2015 BMW X4 xDrive30d (Melbourne red)
• A small roadtrip through Scandinavia: movie - pictures
• A small roadtrip in the norwegian fjords: movie
• A small trip to Nürburgring: movie - pictures |