Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very Good Heart Rate Monitor

First heart rate monitor I've ever owned and it works very well. No problems whatsoever. The chest strap is a little short for big guys however. Still, highly recommended.Update 1/15/13: Just a quick update. I have used this heart rate monitor almost daily for almost a year now and it's never missed a beat. Still totally reliable and accurate. Just wet the chest pads with a few drops of water before you put it on and you will get immediate, accurate readings. Still highly recommended.