once in a while you 'll encounter a product that be so far out front that the other should pick up they marble and go home . mag-lite be the standard bearer in the flashlight category . -lrb- be it not for the picture , you would hardly know from the product description up there that we be talk about a 4-cell flashlight . -rrb-  the primary job of a flashlight be , not surprisingly , to create light . mag get more light out of they flashlight than anybody . maybe it be the bulb , or the reflector . but no flashlight will come close to put out as much light as a mag .  another quality we hope to find in any product be functionality -- do it work every time , or mainly when you do not need it ? I can not recall more than a time or two that a mag fail to come on . I have drop they from height that would have destroy anything less and they still work .  I have a old black aa-size Mini-Mag here that spend about a decade in the cockpit of airplane -- the poorest light place this side of the Black Forest -- so it get a world of use . the place on the end cap for attach a lanyard or hang ring be worn completely through . but the little guy still work like a charm .  the switch on this d-cell model be under live rubber ; it have a solid click on and off . the beam be adjustible to a sharp spot . you 'll probably want to set it there and leave it alone .  i be certain that battery last longer in a mag-lite . the only explanation for this would seem to be that a tiny bit of battery drain occur on some other . before I become 100 % convert to mag I would too often pick up a flashlight that be full of dead battery . I can go for year without change the battery in a mag-lite .  all mag be rugged . the barrel be sturdy aluminum extrusion -- not plastic or stamped metal . both end cap have o ring to keep the case waterproof . and who else would be so thoughtful as to put a extra bulb in the bottom endcap ?  a reviewer below have a legitimate gripe about tubular thing not stay put on anything but a level surface . of course , that have be a complaint for year about pen and all kind of tubular device . this can be cure for the mag-lite with a very small bungee cord . tie several knot in it until it be shorten enough to fit tight around the barrel . the knot will keep the light from roll around .  i like the new hot red Mag-Lites . anybody with any sense at all would know a pretty red flashlight would throw more light than a black one . it just stand to reason .