Quality self-propelled wooden jigsaw puzzle. Laser cutting technology allows the piece to work with its clever mechanical mechanism. Handmade by the best master craftsmen using only traditional methods and techniques. These high quality model kits are self-propelled, no batteries required. A little wax and the tools provided will make them move smoothly. Original design and laser cutting technology. These DIY robot puzzles are made of non-toxic and environmentally friendly plywood. Boasting its original design with amazing details, they will give you hours of wonderful DIY fun. Laser cutting technology ensures that the wooden parts are smooth, no burrs and no sharp edges, all parts are pre-cut, no glue needed. Easy to assemble with detailed English manual. Perfect gift for puzzle lovers. Great gift for puzzle lovers to enjoy a wonderful puzzle solving experience and creative design. Recommended for ages 14 and up, small parts are not suitable for children under 3 years old. The package includes everything you need to create this amazing model. All you need is your time and patience. A fantastic enchanting experience to enjoy and you will be delighted when the project is complete. Creative activity for brain and memory. These 3D wooden mechanical puzzles require a minimum of 4 hours of DIY full of fun. Puzzle activities have been scientifically proven to improve memory, relieve stress, improve visual-spatial reasoning skills, and increase IQ. High quality. All pieces are pre-cut, easy to demould, all you need is time and patience, assembling them one by one following the instructions, you will enjoy every step of making these amazing puzzles.