Solar Power 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. EntertainingThe speed of propeller can change gradually according to the intensity of light. The solar panels which equipped on the propeller convert sunlight to power and drive the model run freely. Manufacturered by Tnfeeon. Gift For Many ApplicationsIt has a wide range of application as great gift for Kids' science project Physical/mechanical learning teachers Demo props on the class birthday gift for friends families parents kids etc. Many of our customers come from school colleague etc. Customer SatisfactionIf you have any problem or any suggestion please contact with our customer service and our service team is always ready to offer help. You can get a full refund if you are not satisfied. Safe & High QualityQuality wood material makes the toy non-toxic odorless and durable to use.