The UST 60 Day Lantern is bright, its bold and its big. Fortunately, it will never leave you in the dark. The UST 60 Day lantern is the brightest, longest lasting lantern in its class. A bright 508 lumens on high setting, 200 lumens on medium setting and 18 lumens on low setting. The low setting will provide 60 days of continuous use on just one set of batteries.