Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't use in the water!

Great watch... great heartrate monitor.Just don't expect to use it in the water. I clouded up after only 1 swim. I sent it back to Timex... they replaced it, but my new one did the same thing only a few week later when I wore underneeth my leather motorcycle jacket on a warm summer day ride when my sweat did the same thing. Chances are... the button was pushed by my jacket sleeve allowing persperation to leak in.