I'm receiving conflicting definitions of what ATM 5 means and for the adventures I go on, I'd like to know when to take off the watch. I go canoeing, swimming in Lake Michigan, the Mediterranean, Alpine streams, and lap pools after hikes and runs. Sometimes I get caught in the rain. Sometimes I fall out of the canoe. When must I absolutely leave it aside to avoid its destruction? I knew it was more waterproof than my Nomos Metro, but I was hoping it would accompany me on as many of my adventures as possible. Thanks.