Features: No welding and glue:Easy Self-Assembly.Our mechanical toy is cut with exquisite lasers technology Includes all the parts except batteries. No need for screws or tools Improve your child39;s imagination and creativity by challenging them to build their own models. Enhance children39;s science knowledge: The endless fun building toys encourage kids learn, ideal building kits for kids ages 8-12, great for educational and entertainment purposes. DIY:You can fully enjoy the hands-on ability and hands-on fun. Gift:Made of non-harm and wood. Perfect school project. Great toys for kids gift for birthday, children39;s day, Christmas, summer camp activities or back to school. Service:If you have any question,please contact us to provide great service. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material:Wooden Size:19*11.5cm Power supply mode:2 AA Batteriesnot included. Package List: Solars Power Ship*1