Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't buy it even if it is for free

I was so excited when I first saw the mouse. Because it was wireless optical and size I liked it. Its performance sucks. I used for 1 week and the range is not event 2 feet.... I first thought the piece is defective. I went to compusa and they gave me a brand new piece. Then I decided to test the new piece in their stores only. The notebook had USB slot (same as mine) on left side and the mouse works when I kept it on left side of laptop. When I kept it on right... IT DOESN'T Work... What the use then !!! I returned it immediately.