Audi Rear Seat Entertainment is an infotainment system specifically for the rear passengers. The system includes two large rear-facing screens mounted in the front seat headrests. Depending on the vehicle the system can tune in to digital television or playback music or movies from a DVD, SD card, smartphone, or the car's hard drive jukebox. Rear seat passengers can connect an external device such as a video game system using the RCA inputs or view and even control the navigation system. Sound can be output through the car's sound system, through wireless Bluetooth headphones, or via regular headphones connected to the system.