As a computer navi tool, the mouse has no peer in its simplicity and ease-of-use, but no matter how good something is, there's always room for improvement. Lasers, rather than a physical ball or optics, achieves pinpoint accuracy, giving you the finesse you need in fast-paced gaming, detailed photo manipulation and more. The scroll wheel has a tilt feature to make side-to-side scrolling just as easy as standard vertical scrolling. To read the fine print and see the intricacies of a digital photo, the Magnifier button is incredibly useful, acting like a magnifying glass held up to your monitor. 5 Customizable Buttons PC & Mac Compatible PC Operating System Requirements - Windows Vista, Windows XP, or Windows 2000 SP4 or higher Mac Operating System Requirements - Mac OS X v10.2-10.4.x (excluding Mac OS X v10.0-10.1) Requires a USB port for wireless transmitter |