Sony Ericsson Bluetooth Handsfree Car Kit lets you make and take calls easily and safely while driving. You have full handsfree freedom because you can keep your phone in a case or purse while getting into the car and while driving. With bluetooth wireless technology, there is no physical connection to your phone - and therefore no wires or mounts. The five button control panel is used to activate your phone, control volume, and place, answer or reject calls. Compatible with any bluetooth enabled phone. Professional installation required.