GOgroove SMARTmini BT ADVANCED Wireless In-Car Bluetooth FM Transmitter with Charging, Music Control and Hands-Free Calling for ANDROID, iPhone, Blackberry and Windows Smartphones
This is a great device for those that don't have a aux cable in their car.  The music quality is great and so is the call quality.<br /><br />Only slight concern is that the device can pull out of the power socket more easily than I would like.