Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worst laptop mouse ever?

I purchased this mouse to replace my trusty Logitech V200 and have been nothing but disappointed. This mouse has serious tracking problems. It will track ok on a piece of paper, but if I use a mousepad, desktop, or surface of my laptop it consistently loses track of the cursor. As much as I would like to carry around a blank piece of paper to use with this mouse, this is NOT the reason why someone buys a laptop mouse that claims to have an "All Terrain Laser"My advise, stay clear of this mouse. It is the worst optical mouse I have ever used in my life.