YM461Y Feature solar panels built in the propeller. Propeller will turn automatically in sunlight. Excellent demonstration of solar power in action. Keep the environment clean when you are enjoy the fun. An ideal gift for birthday and Christmas gift for your friend putting it on the window or in the car. No batteries required.   Package Details Weight: 200.09 g Size: 15.5*9.3*8 cm Package Includes 1 × Solar Plane