I'm a nurse and I need a watch for heart rate so bought this watch in November and it had condensation inside after a few weeks. Thought I had left the little dial open since I have never had a problem with timex watches before. My daughter bought me another one for Christmas and within a week it was full of water and I had not even used it in the shower.  Called timex and was told that water resistant to 30m means "rain proof"  so if you are out in the rain, it won't get ruined. You can't get this wet or put it underwater in anyway. I think this is false advertising and now I am out of the cost of 2 watches and can no longer count on timex watches. For a small fee I could mail the watch back and they can fix it but I can't use it when I wash my hands.  Beware, money wasted twice.