Instruct: Classify Amazon reviews into positive or negative sentiment
Query: VERY DISAPPOINTED

I bought this watch to replace my Polar heart ratemonitor....but am really dissatisfied. I'm having ahard time checking my heart rate...and when I do get a reading, it'safter a while when my heart rate is lowered. My Polar was accurateand I thought without a chest strap, this would be morefunctional...that's not the case. I'm really frustrated...notbecause I don't like the watch, but because it doesn't do what it'ssupposed to do.....and so I'm returning it.