AD.ANT.N04 is a system supplied by Carmedia, an automotive multimedia company based in Spain. It is a combination of an Android Tablet, Car DVR, Radio, and GPS Navigation system. The system connects to the vehicle's onboard computer via an OBD-II port and offers a variety of features such as in-app navigation, music streaming, weather tracking, and notifications. It also offers a range of accessories like TV tuners and rear-view cameras.