This item worked for a day and has not lit. It looks like a short circuit as moving your hand sometimes causes a minimal flickering of the light, but nowhere near the full power of the LED and nothing solid. I have opened and closed the helmet visor several times but to no avail. Pretty cool idea and it gave good light at night when it worked, just unreliable. Unfortunately, my return window has just closed. I will contact the seller and update if they help.