Sunnytech 1pc 3w 9v 333ma Mini Solar Panel Module Solar System Solar Epoxy Cell Charger DIY B043 &hellip; SUFFICIENT ENERGY----High conversion rate, high efficiency output, excellent weak light effect. PORTABLE----Mini solar panel, compact & stylish size, easy to be held, can be easily taken to outdoor activity. HIGH QUALITY----High quality epoxy resin, unique technology to make the components beautiful and strong, anti-wind and snow, increase the service life of solar panels. DIY YOUR OWN MODEL----Build your own powered models, solar toys, solar lights, solar displays, charging small DC batteries. It can be used for teaching purpose. Many of our customers come from school, colleague, etc. EDUCATION---- Solar panels are devices that absorb sunlight and convert solar radiation directly or indirectly into electricity through photoelectric or photochemical effects, it's perfect devices for science project. It can be used for teaching purpose. Many of our customers comes from school,colleague,etc.