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™ Lantern is one of our best sellers and simply unmatched in performance. It will provide 30 days of bright, clean LED lighting up to 300 lumens for an astonishing 30 days!