I have have two of these thing now . which be fun because you can mix part for different color combo . I love this little light . it be always be bright enough for I . I have have some issue with the tail cap partially unscrew itself in my pocket . but after two year in my pocket I can understand it . battery life have be sufficient for my need . it be extremely durable . I send one through the wash once . worked fine afterwards . all in all I would recommend this to anyone look for a quality every day carry light .