For the price of this watch I thought it would be mil spec. and it is not. I believe that Luminox pays Navy Seals to use their name on the watch. First, the body is all plastic and the metal back cover is held on the plastic with 4 metal screws. Go figure, metal screws in plastic body. Obviously screws will strip the threads when you screw and unscrew the back to change the battery. After the watched leaked and was destroyed I discovered that the threads had stripped of course causing back not to seal. Plastic threads on metal screws would be ok if they put in more screws so if one is stripped you have others that will seal the watch. But this has only four, one for each corner. I was also careful of not over tightening the screws but it still got stripped. If you misalign one screw slightly the threads will strip and your watch is now not waterproof. For that price the body should be made of metal or at least have metal inserts. Other than that watch is ok as long as you don't use in water and risk water leakage like others here complain of also.