Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A lot cheaper than a treadmill ...

If you are one of those people that gets bored running on a treadmill all of the time, the Forerunner is for you. I used to run on a treadmill simply because it tells you how fast, how far you have gone, and how many calories you have burned. Not only does this Forerunner give you this information--on a large, easy to read while running display--but it tracks your progress and provides a training partner for you (something a treadmill doesn't offer). In addition, the Forerunner doesn't regulate your pace like a treadmill. This forces the runner to watch their own pace, allowing them to learn what a particular pace feels like -- an essential skill for anybody who runs in races. A must have for anyone - whether you're just tyring to get in shape or are a serious runner gearing up for a race. The one drawback, however, is that this version of the forerunner doesn't monitor your heart rate. If this is an option that you require, check out the Forerunner 300 series.