Made of premium 4mm thickness snap-together birch plywood by laser cut technology, precise and clean. The wood is eco-friendly, safe, recyclable, manufactured from natural materials and no glue is required to assemble them. The birch plywood we have used for this model was imported from Russia, fine in structure and durable This mechanical 3D music box woodcraft construction kit comes with precut pieces on the stencil boards, easy to remove. It includes a detailed 3D illustrated manual with numbers marked in order, so that you can follow it to assemble the puzzles quickly and correctly. It is advised to smooth the burrs and gears by sand paper and wax (wax not include) before constructing It is a wooden DIY project kit for adults and teens to build. The building and assembling process can not only bring a lot of fun but also cultivate your patience and attention, awaken your desire to spend time mastering something great with hands, improve logic, problem-solving skills, also promote abstract thinking and imagination through the assembling process A small cute wooden music box will come out after assembling, puzzling and music 2 in 1. A good way to spend leisure time on a sunny afternoon or on a rainy day, enjoying the quiet time alone, focusing and releasing yourself in peace for reducing stress. Then, improve an overall mood while listening to the soothing music after its been finished. Its also a beautiful display piece for decoration This music box model kit includes 51 wooden puzzle pieces, which will need 30-60 minutes to build for 3D model beginners. The finished model size is: 8 x 8 x 5 cm. A great gift idea for birthday, Christmas, Valentines Day, Thanksgiving, and some other holidays to dad, mum, teens, men, women, DIY enthusiasts and those who have a passion for modeling. For boys and girls aged at 8 9 10 11 12 13 years old, it is advised to build with the help of an adult Product Description Great for display and collection. All our 3D wooden models are made in premuim quality natural wood and safe to play with. The building process is with education and entertainment value, while the end result is sturdy and ornamental, with collection value. If you want something different and vintage, then, this is a good choice. 3D Wooden Model Kit with EN, DE, FR, ES, IT, NL language user manual, also friendly for 3D model beginners to build. Laser Cutting Technology All the wooden pieces are cut by laser, precise and clean. Moreover, the built up model is firm and sturdy, good for long-term display and collection. Extra Wooden Pieces For some small and thin parts, there are some extra pieces for you to replace, in case you have broken them. Easy Understanding Drawings Manual We adopt the manual method with pictures and texts, which is easy for beginners to understand 3D assembled toys.