I carry a mag-light with I for a good many year while drive truck . a truck cab be probably one of the hardest place there be on flashlight , they never seem to last yet I never have a problem with the mag-light  once in a truck stop I see a driver set he mag light on a tire and forget it be there , when he start to move the truck the light fall off and be run over by the tire . when he realize what he have do he stop and pick up the light and it be still work . any other flashlight would have be flatten . if nothing else this make a believer out of I .