Logitech B100 Full-Size Corded Mouse

* 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. Scrolling: Line-by-line scrolling | Scroll Wheel: Yes, optical.  *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.