Before revision: Function A single DIN head unit with a large retractable touchscreen and DVD Central to a vehicle's sound and information systems, head units are located prominently in the center of the dashboard or console, and provide an integrated electronic package.
After revision: Function A single DIN head unit with a large retractable touchscreen , DVD and GPS Central to a vehicle's sound and information systems, head units are located prominently in the center of the dashboard or console, and provide an integrated electronic package.