LEGO Hydroplane Racer Features a unique aerodynamic design with huge sponsors, large cockpit, detailed engine with moving pistons and a spinning propeller Maneuver the Hydroplane Racer and see the engine and propeller spring to life This LEGO Technic model is designed to provide an immersive and rewarding building experience, appropriate for children aged 8 to 14 Interactive, 3D Digital LEGO Building Instructions app available online for both A and B models