Robotime 3D Mechanical Puzzle Game Marble Roller Coaster Building Wood for Adults Set of Puzzles Present (High Coasters)

Quality self-propelled marble coasters. Laser cutting technology allows the piece to work with its intelligent mechanical watch operation. Handmade by the finest artisans using only traditional methods and techniques honored by time. These high quality model kits are self-propelled, no batteries needed. Some wax and tools provided will make them move smoothly. Creative activity for the brain and memory. These 3D wooden mechanical puzzles require a minimum of 4 hours of fun filled DIY. Puzzle activities have been scientifically proven to improve memory, relieve stress, improve visual and spatial reasoning skills and increase IQ. Perfect gift for puzzle lovers. Excellent gift for puzzle lovers to enjoy a wonderful puzzle solving experience and creative design. Recommended for ages 14 and up, small parts not for children under 3 years old. The package includes everything you need to make this amazing model. All it takes is your time and patience. A fantastic and lovely experience to enjoy and you will love it when the project is done. It is like an old hand toy and does not need batteries. Bring out the imagination for our Package Dimensions :5.08 cm x 32.00 cm x 23.60 cm, Manufacturer: ROBOTIME