At Ultimate Survival Technologies, we take LED lighting seriously. We stand behind our performance claims with extensive lab and in-use testing to ensure that you are getting the right light for your needs. As pioneers in LED long-life technology, we are proud to offer a full line of LED flashlights, lanterns, and headlamps to light your path in the darkest conditions. Our 30-DAY DURO™ Lantern is one of our best sellers and simply unmatched in performance. It will provide up to 700 lumens of bright, clean light and runs for an astonishing 30 days on LOW mode.