Mercedes-Benz OEM SAP Profile Bluetooth Module Adapter C117 C292 W166 W204 W212This is a brand new genuine Mercedes Benz SAP Bluetooth telephone cradle adapter system. If your MB is pre wired for Bluetooth then this is a great option for hands free phone usage while you're driving. As you can see this is a corded unit which you can opt for using if you'd like to have a private conversation in a car full of people. Do your research to see if this unit is compatible with your car and your particular phone model. This eject box is