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This is a novelty baseball cap printed with a solar-panel graphic and the slogan "Solar Energy: Solar Panels Let The Sun Work." The joke is the point: it is a graphic cap, not a functioning solar device, and it charges nothing. It suits someone who wants a cheap gag gift or a conversation-starting hat for a solar installer, engineer or energy nerd. Against plain caps it offers no technical advantage, and against real solar-charging headwear it has no panel, battery or fan.
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Lowest price we've seen: $19.99 on Nov 11 at Amazon. Tracked across 1 store since Nov 11.
This baseball cap carries a solar power theme. The design is based on the phrase "Let The Sun Work" and shows solar panels and solar energy artwork.
