NO BATTERY NEEDED:Transmitting the friction power from the wheels to the upper body of the car. Creating a body wave to imitate a real monster truck running on the uneven surface. Easy to play for kids. DURABLE: The body is hard and durable it is not easy to fall and the rubber wheel is better in contact with the ground. Manufacturered by Kyriad. BEST GIFT: perfect for your kids or little friends birthday Christmas thanksgiving childrens day. AFTER SALE SERVIC: We're very confident about the premium quality of our gift toysWe provide best friendly customer service. If you ever have problems with your trucks christmas gift for kids please contact us our customer service teamOur team will provide 24-hour service. EASY TO CARRY:Suitable for kid's handsThe mini monster pulls the trolley back to the trunk and can carry it with you when you go out.