No batteries needed Powered by solar energy 6 different working models: Car/Windmill/Puppy/Revolving Plane/Stationary Plane/Airboat Great demonstration toy Suitable for children 8+ The finished car is 2.5" long, 1.5" wide, and 2.75" tall when the solar panel is extended all the way up. The solar panel itself is 1" by 1.25". 1 x Motor 1 x Solar power panel 2 x Gear 2 x Axle 1 x Adhesive sponge 4 x Wires 21 x Plastic pieces