I still do not understand how Maglite can make such great flashlight , and yet make a horrible single cell key chain flashlight . I have use maglite product for year . they be incredible sturdy , and yet beautiful to behold ! I have try to tell they , but they do not seem to listen , or care . I keep buy they , think they 'll get better , but they do not . like other have say , they be not very bright and they use power rapidly . and they flicker . I really do want a small flashlight for door lock and the like , but this definitely not it . DO BETTER , MAGLITE !