Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Nice mouse

Great mouse, cheap and works great. The back and forward buttons are amazing, no more having to move the mouse all the way to the browser's button :-). The tracking is wonderful, I have experienced zero lags or "errors." Everything works and the mouse feels comfortable in the hand, no doubt because it is light. The ambidextrous design should be welcome for lefties.