Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not worth the extra money over the non-mouse versions

I bought this because it allegedly included a mouse/pointing device on the same flexible sterilizable keyboard device. Unfortunatetly the pointing device is unusable. It consists of 4 arrow shaped buttons pointing in the directions of the compass that allow you to guide your cursor the the proper place. It is impossible to guide the cursor with precision. Completely unusable in practice. Still functional as a keyboard but requires a separate mouse.