Description: Durable, environmentally friendly material ensures the toy is safe to install and has no peculiar smell. It contributes to developing children's intellectual ability and helps children develop their interest in science because this model is an educational DIY toy. It is constructed of wood material. The length of this product is 11cm, the width is 6cm and the height is 15cm. This product is suitable for students to learn more knowledge. The gear drives the rotary table to rotate, promoting parent-child interaction. Item Name: Experiment Toys Material: Wood Battery: 2 x AAA Batteries (Not Included) Features: Fade-less, Fine Workmanship, Novel Size Details: L: 11cm/4.33", W: 6cm/2.36", H: 15cm/5.91" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 Set of Experiment Toys (Assembly Required)