Will the Duo work in your car? Probably not, and here is why.
We have tested the Duo in countless cars that come with a factory-installed 30-pin iPod cable. In general, the Duo is NOT a good Bluetooth solution for most cars and does NOT work in most cars using the iPod cable that came with the car.Continue reading: Will the CoolStream Duo work in my car?
The CoolStream Duo will ONLY work with the 2009 Mercedes SLK350 if the iPod cable also has the 3.5mm AUX jack. This is a specific cable split in two, with one end having a 30-pin iPod connector and the other end having an AUX port.