Description Fascinated by the unique synergy of nature and mechanics, Ugears continues to explore the amazing world of automatons and presents its latest mechanical pet, the Butterfly model.The Butterfly is not a static stand model, but an animated kinetic sculpture. Each of its details is designed to make sure it fits its own place and plays its own part in the workings of this outstanding mechanism. Equipped with a rubber-band motor, the mechanical automaton moves to imitate the flutter of a butterfly with no external power source or batteries.Model Size: 14.2 x 22.8 x 22.8 inNumber of parts: 168Level: IntermediateAssembly Time: 3 hoursRecommended Age: 14+Kit weight: 1.28 lbs