Features:1. Quality wood material makes the toy non-toxic, odorless and durable to use.2. Explore the potential of solar power with this neat science kit.3. The speed of propeller can change gradually according to the intensity of light.4. Solar powered design, which is a good item to make kids know about the solar, and it is novel, fashion, eco-friendly and energy-saving. 5. It can be a great gift to your families or friends, it also can be used for teaching purposeSpecification:Material: WoodItem Type: Solar Helicopter ToyPackage List:1 x Solar Helicopter Toy1 x Solar Propeller 1Quality wood material makes the toy non-toxic, odorless and durable to use. 2Explore the potential of solar power with this neat science kit. 3The speed of propeller can change gradually according to the intensity of light. 4Solar powered design, which is a good item to make kids know about the solar, and it is novel, fashion, eco-friendly and energy-saving. 5 It can be a great gift to your families or friends, it also can be used for teaching purpose