With hyper-fast scrolling. you control the pace. Fly through long documents and Web pages with a single flick. Or switch to click-to-click mode for precise. line-by-line navigation.Advanced performance.- Hyper-fast scrolling: A nearly frictionless scroll wheel lets you fly through long documents and Web pages with a single flick. There’s no holding you back.- Click-to-click mode :You get the control you need for precise. line-by-line navigation of lists. slides. images. and menus.- Scroll-mode switching: With the press of a button you can toggle between hyper-fast and click-to-click modes. The choice is yours.- 1000 dpi laser precision: Outperforms optical mice. Experience smoother cursor control on virtually any surface.- Forward/Backward buttons: Do more with your mouse. Move backward or forward through Web pages or navigate your photo albums with ease.- Side-to-side scrolling with optional software: Add side-to-side scrolling. application switching. and other programmable features.Comfort and simplicity.- Soft side grips and a contoured design: Give you more support and control.- Plug-and-play USB: Works right out of the box—just plug it into your USB port.