Instruct: Classify a review into positive or negative sentiment.
Query: Worst mouse

It was the most horrible mouse I ever bought.It has of course wonderful design, nut disgusting functionality. As it is designed actuallt as one button mouse it keeps mistaking which button you are actually pressing. The roller is too small so it frequently miss your rotating, and you have to use more power, so you get some of the mouse buttons mistakely pressed. The cord is too short, so you can put it just near your mac. I got rid of it, and using my old mouse, and really amazed who convinient it was... It always gives me the correct button i am pressing!