LEGO 42057 Technic Ultralight Helicopter Building Set

Bay feedback response system. This 2-in1 LEGO Technic model can be rebuilt to create an Experimental Aircraft! Interactive, 3D digital LEGO Building Instructions app available online for both models! Move the joystick to control the tail rudder and spin the gearwheel to see the main rotor, tail rotor and detailed engine spring to life. General Interest LEGO 42057 Technic Ultralight Helicopter Building Set Features a high-tech aerodynamic design, open cockpit with detailed seat, spinning main and tail rotors, controllable tail rudder, and a detailed engine with moving pistons. - Move the joystick to operate the tail rudder. - Spin the gearwheel and see the rotors and engine spring to life. - A uniquely decorated LEGO Technic 40th Anniversary brick is included with this model. - Features a high-tech aerodynamic design, open cockpit with detailed seat, spinning main and tail rotors, controllable tail rudder, and a detailed engine with moving pistons. - Move the joystick to operate the tail rudder. - Spin the gearwheel and see the rotors and engine spring to life. - A uniquely decorated LEGO Technic 40th Anniversary brick is included with this model. - Climb aboard the open cockpit of this high-tech, Ultralight Helicopter with its awesome white, red and black color scheme and cool stickers.