Inspire kids to explore the secrets of the oceans with this LEGO Technic 42201 Deep-Sea Research Submarine Set. They can also enjoy an intuitive building experience with the LEGO Builder app, where they can zoom in and rotate the construction model in 3D, track their progress and save all sets in one place.The model is packed with features like those found on real submarines, including steering, 3 spinning propellers, 3 air tanks, and a cockpit with seat and controls. The submarine features an extending arm to grab and lift the barrel accessory as kids play out their own sea-bed adventures. This submarine model kit comes from a range of LEGO Technic sets (each sold separately) which feature realistic movement to introduce young builders to the universe of engineering.