UGears Mechanical Models are self-propelled, mechanical wooden model assemble kits. These designs are inspired by real-life mechanisms. The team believes that building these beautiful working models should be fun. They have dedicated their engineering know-how, meticulous product testing and quality control to a single goal: Ensuring that the models provide an engaging and rewarding experience for the whole family. 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 – a 3-D puzzle. 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, imitating the flutter of a butterfly but with no external power source or batteries. As with every model in the UGears family, The Butterfly requires no glue or additional tools to assemble.