2 out of 3 lightbulbs worked. Revain immediately sent a replacement. In the new set, 2 out of 3 bulbs worked. After disassembling one of the flashlights that wasn't working, I found that the batteries had run out. I changed the batteries and the light worked fine (after cleaning the contacts). Another stopped working after a few days. I opened it and the batteries were dead. So the lighting works well but the product is old with leaking batteries. If you are willing to replace the batteries and clean something immediately upon receipt. The reason for my rating is that they are marked as "emergency" and that means high reliability to me. It's not like this. I just saw that the battery says they replace batteries for free, they are free but shipping batteries for one light is $5. That's almost more than what I paid for this 3 light pack (with dead batteries). On their website, they also do not list these emergency flashes in the products. The closest thing to this is a "reusable glow stick" with a picture of children playing in the yard. Much more appropriate use.
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