Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Absolutly Great

I have had this over a year. Optical track ball is the way to go.I use it to watch TV/MOVIES on my Laptop as well as for computer work including CAD, Photo Edit and Video edit. More accurate than any other input except tablet. Would be even better with a numeric key pad.Again Amazon gives you no INFORMATION so I went on another site to get it before I bought it.Some reviews said it eat batteries mine lasted nearly a year and they are rechargable so what's the big deal?