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Description: Specifications:Type:3D Wooden Perpetual Calendar PuzzleMaterial:WoodMechanism:Mechanical ModelDifficulty Level:1-StarEstimated Assembly Time:1-2 hoursFeatures:Decorative and Functional: A unique mechanical calendar that not only serves as an eye-catching decor but also keeps track of dates from 2017-2044.User-Friendly Assembly: Pre-cut wood pieces and a 1-star difficulty level make it accessible and enjoyable to assemble, offering hours of relaxing building fun.Educational Experience: Learn STEM concepts while piecing together the mechanical structures step by step, a gateway to the fascinating world of mechanics.Ideal Gift and Hobby: Perfect as a sophisticated office or desk decoration, or a thoughtful gift for any occasion. Also serves as a stimulating brain teaser that draws attention and engagement.Quality Material: Crafted from wood, offering a sturdy build with a sweet faint scent of wood, enhancing the overall user experience.Package included:1X Wooden Perpetual Calendar