I have one on my key chain. It has been kicked around for YEARS and is fairly indestructable. It has only been turned on by accident once in my pocket.

the batteries can be a bit of a b$%&h to find at times. and the light appears to dim after a shorter time than expected, but you most likely wont find a tougher little flashlight than the L1

it comes with colored lenses as well. a good way to preserve night vision for reading maps in the dark if you need it for that purpose.

something to consider.