ROBOTIME 3D Wooden Puzzle or Electric Model Roller Coaster Perfect for Craft Brain Adults Educational Ages DIY Home No Connector Illustrated

"New Marble Product!" RoboTime's Marble series introduces a new product! Perfectly compatible with "Night City" (motorized set sold separately). The mechanical appearance will captivate both adults and children, and when combined with the features of a 3D puzzle, the fun is doubled! Stimulate your imagination while enjoying the mysterious atmosphere and the beauty of the intricately assembled machine! Recommended age for this 3D puzzle motorized model: 14 years and older; Number of pieces: 472pcs. This toy features a dual mode that can be switched between manual and electric modes. As a toy, turning the handle will activate the gears, make the ball climb, fall, and spiral accelerate. Pressing the touch switch will activate the electric mode. While not required, it is designed to be powered via a USB-C cable. You will need to provide your own cable. "Challenge and a sense of accomplishment" This 3D puzzle requires assembly. The instructions are written in English, but they are illustrated and easy to understand. The instructions are in full color and clearly explain every step, making it suitable even for beginners. This toy, which combines STEM education and leisure time, is sure to captivate not only children but also their parents. Parents and children can work together on it, enjoying their free time while training their hand-brain coordination, enhancing their visual perception, and stimulating their spatial imagination. Product Specifications: This 3D puzzle electric model is recommended for ages 14 and up; it has 472 pieces; its mechanical appearance will captivate both children and adults. It has two switchable modes. As a toy, turning the handle will make the gears rotate, the ball climb, fall, and spiral accelerate. It features an electric module for automatic control operation.