UGEARS Mechanical Aquarium 3D Puzzles Decorative Wooden Puzzle Driven by a Spring Self Assembly Gear for Adults Model Kits Teens

Lifelike Swimming Fish Aquarium Wooden Models: Watch two tropical fish chase each other around macroalgae fronds with realistic head and tail movements in aquarium wood 3D puzzle crafts for adults Innovative Spring-Powered Mechanism: Experience 40 seconds of continuous underwater action of 3D puzzles adult per wind with internal pendulum regulation, featuring simple STOP/SWIM switch operation Multi-Speed Marine Environment Simulation: Enjoy simultaneous wooden 3D puzzles for adults craft kit fish and algae rotation at different speeds and directions, creating authentic underwater rhythms Educational 6-Hour Medium Assembly Project: Learn gear mechanics, pendulum functions and spring mechanisms while building 325-piece wooden puzzle model kit featuring precision laser-cut components Perfect Wooden Gift: Ideal present for saltwater aquarium hobbyists, snorkeling/diving lovers, marine biology fans or anyone for Birthday, Christmas, Fathers Day; great as hobbies for adults women and men, Manufacturer: UGEARS