SpellI'm not a diver, so I've never taken a dive watch beyond the depths of a swimming pool... : ) But I do know people that dive that still don't take dive watches beyond 60 to 80 meters. Looking at the requirements to meet the standard, the Seastrong wouldn't pass because it doesn't have the running seconds subdial. Almost every brand goes into these depth wars but, realistically, maybe one percent of owners really get to test those ratings. In the case of the Seastrong, as with most mechanical chronographs, the depth rating comes with a caveat in that the chronograph pushers (buttons) cannot be used while underwater... only a few manufacturers explicitly allow the operation of the pushers while submerged, and then its just a few feet underwater.