This is a standard car windshield mount for the iphone 4. It attaches to your windshield with a suction cap that is retractable via a lever to provide additional suction so it will not fall off like some others do. The mount has a flexible stem allowing it to be moved around and used at different angles and in different positions. This case is ONLY for the iphone 4 16gb and 32gb models. It may work with other models but it is only being sold for the iphone 4.