Never trust ANY warranty on a product bought through Amazon.

Most of the import companies claim a really good warranty then pull the "It's Amazon's responsibility. If they won't help you...good luck finding us in China" tactic. That's if the company even still exists 6 months after your purchase. Many of the import companies are quick flip scams. They buy a pallet of poor quality junk, sell it cheap, claim a warranty, then go out of business and open up a new company to repeat the scam. Amazon can't kick that company off the site because it's already gone.

Even if the company is still in business Amazon likely won't take action against the shady seller...because they just don't.

This particular light seller seems like a little bit more stable of a company than the Chinese importers. But Amazon still won't do anything to them.

That isn't to say that all warranties offered on Amazon are invalid. Some companies are GREAT about it. Anker for example warranties every product they sell and are FANTASTIC about honoring the warranties on defective products. But you should never assume you can trust a warranty on a product bought on Amazon unless you know the company or they have a good reputation for warranty handling.