I have be use these same light for 12 year now . the aa one be waterproof to about 30 foot or so -lrb- the o-ring keep the seal airtight -rrb- . I do not know if maglite support that use though : -rrb- I use they not only as light , but to prop door open , hammer small nail . these thing be tough ! keep one in the car . one in the kitchen . one in the bedroom . one in the toolbox . one at work . helpful hint : lightly grease the o ring with vaseline or other petroleum jelly occasionally -lrb- wipe off excess -rrb- . this keep the seal watertight , and make the light work like new . take off head of flashlight , and examine the bulb -lrb- not light ! -rrb- - after a while they get burn on the inside - replace occasionally to maintain maximum illumination ! replacement bulb be cheap ! get some ! I use these a lot ! consider use nimh rechargeable battery .