Description: 【Material】: This Mechanical Crawling - Telescopic Worm Robot Model Toy is made of plastic, ensuring durability and longevity. 【Product Dimensions】: The crawling experiment toy measures 70mm in width and 150mm in height, making it a size for easy handling by children. 【Educational Tool】: Ideal for primary and secondary school students, this toy serves as an experimental teaching material that can stimulate interest in robotics and mechanics. 【Interactive Play】: The robot model toy features a unique crawling design with telescopic worm movement, providing engaging for kids. Requires 2 AA battery (not included). 【 Gift】: With its educational value and fun combined, this mechanical crawling robot model makes an excellent gift choice for birthdays or other special occasions for children who are interested in science or robotics.   Specification: Material: Plastic Size Chart: Width 70mm/2.76inch Height 150mm/5.91inch Package Includes: 1x Crawling Experiment Toy Note: 1.This is not infant toy, please take away from children to avoid eating. 2.Please allow slightly errors due to manual measurement and different monitors.