Product description The Wireless Optical Mouse 2000 combines the accuracy of an optical mouse, with the freedom of movement that you can only achieve with wireless technology. PC Operating System Requirements - Windows Vista, Windows 98/2000/XP/Pro/Home/Media Center Edition/Tablet PC Edition Mac Operating System Requirements - Mac OS X v.10.1-10.4.X (excluding Mac OS X v. 10.0) Requires a USB port for wireless transmitter From the Manufacturer With the Wireless Optical Mouse 2000, you simply get moregreater comfort, wireless freedom and long battery, simplicity, and High Definition Optical Technology. Key Features Mac-compatible Either-hand Use Wireless USB connector Ergonomic design Microsoft Optical Technology Wheel scrolling Additional Features Scroll Wheel: Move through your documents quickly without having to click the on-screen scroll bar. Comfort: Enjoy the comfortable design created for either hand and featuring recessed sides. Wireless freedom and extended battery life: Many users of this wireless mouse average more than six months of battery life. Easy to set up and use: Just plug in the receiver to get started. Microsoft High Definition Optical Technology: Experience the ultimate performance in the palm of your hand. Microsoft High Definition mouse products are more precise, more responsive, and deliver smoother tracking.