Instruct: Classify Amazon reviews into positive or negative sentiment
Query: No trouble in last 2 years

I have been using this mouse for last two years with my office laptop. I never faced any problem with this mouse. It does not need mouse pad at all! When you move from old mouse (with mouse ball) to this Optical Mouse you will feel the difference instantly. It's very affordable and easy to use, and also carry anywhere with your laptop, no mouse pad needed.