The LED Solar Cap from ThinkGeek “features a solar panel in the brim — at night push a button and two bright LED spotlights power-up to illuminate anything in your field of vision.” Click here for first picture in gallery.
The integrated electronics, solar panel and switch are completely sealed for use in any weather. 2 hours of charging in full sunlight can light the hat at night for 2 to 18 hours depending on the brightness setting.
[via ThinkGeek]
