A comfortable, ambidextrous shape feels good in either hand, so you feel more comfortable as you work-even at the end of the day. With 800 dpi sensitivity, you'll get precise cursor control so you can edit documents and navigate the Web more efficiently. Side-to-side scrolling plus zoom lets you instantly zoom in or out and scroll horizontally and vertically. Perfect for working with spreadsheets and presentations. Zero setup with flexible connectivity means you just plug it into your USB or PS/2 port-it works right out of the box. This mouse is built by Logitech®-the mouse experts. It comes with the quality and design we've built into more than a billion mice, more than any other manufacturer.