I purchased an Iron Man watch with a 30 m rating assuming that with a 30 m rating it could go underwater 90 feet or 30 m. However, after jumping in the water my watch immediately took on water and broke. After reviewing their website a 30 m rating just means that you can wash your hands with it. You can't even get into a pool. This is an outright lie by the company Timex. I don't see how this is legally allowed. In and of itself, the Iron Man competition is a competition of swimming bicycling and running. And then to falsely put a 30 m rating on a watch, knowing that you can only wash your hands with it is just outright wrong.