This is a new SANYO-made solar cell power generation comparison panel. HIT Solar, which was said to be number 1 in the world at the time. It was a non-saleable sales demo sample for stakeholders, but it is also useful as a learning material or educational toy for children. When exposed to sunlight, red and green light-emitting diodes rotate and light up, allowing you to see the difference in power generation levels with conventional panels depending on the light intensity. It is interesting for learning about natural energy solar power generation for children's education, independent research, and as learning materials, or as an interior decoration by the window. It is also a super rare item in the sense that it is made by the now-defunct Sanyo company. Size: Height 26.5 cm, Width 30.5 cm, Thickness 2.2 cm Please refrain from price negotiations considering the shipping costs. It is also listed on Mercari on other flea markets, so it will be deleted if it sells there. #EducationalToy #ChildrensEducation #SolarCell #SolarPanel #LearningMaterials #TeachingMaterials #IndependentResearch #Sanyo #Eco #NaturalEnergy #SDGs #SolarPowerGeneration