I was very happy to use this to count pool laps. Arrived Sunday evening. I reset the time and date. Everything was good. Everything was fine on Monday morning. Took the pool on a Monday evening and it started up and worked with no problems. Halfway there I realized he was dead. Totally dead. I can go to a jewelry store to change the battery. I hope that's the problem. If not, it's quite a shame that a "waterproof" watch doesn't last more than 20 minutes in the pool!
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