Children aged 6 and up can learn through play and discover their passion for technology with detailed LEGO® Technic designs. With functioning gearboxes, wheels and axles that children can assemble themselves, their understanding of the complex details of the propulsion of cars , aircraft , motorcycles and construction vehicles and how they work grows. Sets can be further enhanced with CONTROL+ , a free app that can interact with many motorized LEGO® Technic toys with a remote control, adding elements such as movement and sound and allowing girls and boys to complete challenges and share them with their friends. Also it is a perfect gift for advanced adult builders .