Features:1. Made of high quality wood material, which is safe, durable and eco-friendly.2. Scientific experiment toys to exercise your child's hands-on ability.3. Play with DIY handmade wind power car and your child will have a sense of accomplishment.4. Easy to assemble and disassemble, exercise children's thinking ability.5. Children can increase some circuit and scientific knowledge while playing.Specification:Item Type: DIY Wind Power CarMaterial: Wood Battery Type: 2 * AA Batteries( Not Included )After Assembly Size: 12 * 8 * 6.5cm / 4.7 * 3.1 * 2.6inchPackage Weight: Approx. 91gPackage List:1 * DIY Wind Power CarNote:1. Please allow 0-2cm error due to the manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.