Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Piece of s%^t

I received, the Oregon Scientific Vibra Trainer Fit Model: SE211, as a gift for Christmas. I was so excited to try it the first time. I figured out how to strap it on then came the studying. It took me a while to figure out how to actually use the dang thing. After a little reading, I was able to put the Heart rate monitor to work. I used it for the first time, on base, in the gym. I thought it was great. I started a heart rate log along with my running log. I was able to make two other entries before it stopped working. That's right; I used the Eighty dollar heart rate monitor, made by Oregon Scientific, three times before it stopped working. I have e-mailed their customer support a few times but have yet to get a reply. Bottom line, not only is the product terrible, the service is just as bad. The Fifteen dollar Polar I got at Wal-Mart was a much better deal.