The Logitech MX Revolution scrolls through long documents at lightning quick speeds with the nearly frictionless alloy scroll wheel. Shift to precise click-to-click scrolling to navigate lists, slides and image collections. A high-resolution sensor inside this mouse makes it the most sensitive, highest performance mouse on the market. The precision laser tracking works on almost any surface. The Logitech MX Revolution uses advanced technology to detect your current application and automatically apply the scrolling mode that best fits the task at hand. Two conveniently located side buttons let you easily move forward and back through pages on the Internet. The mouse also moves seamlessly between documents. It's never been easier to cut and paste between applications, compare documents or check email. Highlight a word or phrase and click the Search button to display results from a search engine immediately. Have full-speed USB wireless technology with a simple plug and play interface. System requirements - Windows 95, 98, 2000, Me, NT 4.0, XP, Mac OS 8.6 or later, available USB port, CD-ROM drive (for MouseWare software installation) Package Includes - Logitech MX Revolution Cordless Laser Mouse / Recharging station / AC power cord / USB micro-receiver Logitech SetPoint software CD / User's guide / Manufacturer's 3-year limited warranty