Please kindly noted that this item is sold by third-party sellers from Joybuy marketplace. Solar Power Generator DC Motor Mini Fan Panel DIY Science Education Model Kit Product Descriptions Cultivate children's practical ability, so that knowledge is no longer theoretical. Improve children's innovative consciousness and ability to win at the starting line. Cultivate children's interest in learning and thirst for knowledge, and improve their academic performance. Scientific knowledge in small production can lay a foundation for future inventions, mathematical, physical and chemical studies. Exercise children's hands-on ability, understand the advantages and disadvantages of solar photovoltaic power generation and photovoltaic power generation. Experimental purpose:Let the children know the characteristics of solar photovoltaic power generation and photovoltaic cells, the driving principle of the motor, how the propeller rotates to produce wind. Material: Plastic Features: DIY, Kids Toy, Educational Battery and screwdriver not contained Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package content 1 x Set of Solar Fan Model