Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Big disappointment

I was so excited to get this. My hedges are about 10' high and 10' wide. I only need to trim them once or twice a year at the most so it didn't make since to spend the money on a comercial one. Then it came. It is heavy and flimsy. It did reach the center of the hedges that I could not reach with my regular hedge trimmers but, after about five minutes it started to smoke and smell and shut off. I let it cool down and tried it again and the same thing happened. I sent it back and am waiting for my refund.