Let your passion for building take flight for incredible adventures aboard the Rescue Helicopter from Science & Play. An incredible set with more than 250 components to build a motorized helicopter and 20 other models and technical applications. Numerous components including a planet carrier cage, cogwheels, worms, blades and rotors, to approach the world of mechanics in a simple and fun way. And with the manual winch, your rescue mission is accomplished! Follow the instructions in the illustrated manual with technical and scientific information on flight dynamics, or download the free app with interactive 3D instructions for all models. Batteries: 4 LR6 batteries not included