due to its rigid aluminum construction any form of shock absorb by the light , generally from a fall at hip level or even a roll out of the truck door , will kill the bulb . I have be tell the lead version of this light be a better option as the LED 's be more durable . personally after own a few of these I find they to be over rate . they be to heavy , the beam be very weak when its widen and very small and bright when focus . I find there be no good in between . in my opinion you can get just as good performance with a smaller 2d mag light of even the aa version .