Features: 1. Function: automatic front, tail/wings/mouth/front feet, transmission simulation action. 2. Science and technology education: Cultivate various abilities of children's growth process. Exercise children's ability to seek knowledge, exploration, innovation; independent thinking, hands and brains to solve problems. 3. Understand the interaction and interaction of mechanical transmission structures; understand the principles of the mechanics of movement and the transformative effect of power. principle of mechanical transmission and develop children's ability to explore science and technology. 5. Customer Service: With customer satisfaction being our first priority, we provide satisfaction service for all of our merchandise. If you encounter any problems, please contact us in time. We will give you answers as soon as possible. and the shooting angle, the actual color of the item may be slightly different from the color shown in the picture.2.Due to the manual measurement, please allow 1-3cm measurement deviation. Assembly required)