Runs on 2 AAA batterys and the seal on the back seems water resistant.
Now comes the disclaimer. I can see this thing breaking easy if your a dumb a$$. You know the kind of person that thrown things on the ground or you drive over things, (this thing is no Snap On Quality) or if you have kids, or a air hose that's on one of those retractor things that is just begging to retract and whip the crap out of your car or boat or what ever. But if your a "sophisticated gentleman"
I could see you enjoying this LOL LOL