Puzzle Mini Baby Child Educational DIY Wind-up Toy

This mini car is an interactive toy which is good for intelligent exploitation, parent-offspring communication, and cultivating hobbies, coordination of eyes and hands, manipulative ability and brains beating, and other abilities. Features: This car drives very fast, can avoid obstacles, climbing and so on.  By assembling by hand, you can make a wind-generating vehicle. Train children's practical ability and thinking ability. The motor is driven to generate wind power and push the car. According to the law of conservation of energy of physics, kinetic energy is converted into electric energy. Great educational gift for kids and students. Specifications: Material: plastic Color: black Battery: 2 * AA batteries (not included) Item size: 9.4 * 7.6 * 9cm / 3.70 * 2.99 * 3.54in Item weight: 63g / 2.22oz Package size: 20 * 14 * 2cm / 7.87 * 5.51 * 0.79in Package weight: 70g / 2.47oz Note: Batteries are needed, but not included. Package list:    1 * DIY Wind Car Kit