digital optical scanning with workhorse features - scrolling and zoom control, multiple browsing speeds, a five-buttons and a scroll wheel, as well as programmability.PRODUCT FEATURES Razor-sharp control Digital Optical Sensor scans almost any surface at 1, 500 frames per second Auto-scroll wheel start with one-touch zoom action then use the instant menus to customize single-click functions Easy to clean Scrolling and Zoom control Multiple browsing speeds 5 button with scroll wheel 3 programmable buttons USB and PS 2 compatible Windows 95, 98, NT 4.0 or 2000 for PS 2 connection Windows 98 or 2000 for USB connection .  (less)

as optical;2.4Ghz wireless technology helps ensure high-speed wireless performance and great range - Up to 30 feet;Advanced power management technology provides up to 1 year of battery life on 2 AA batteries;4-way tilt-scroll wheel lets you move side-to-side or up and down easily;Flexible rubber grips provide excellent comfort and control;Mini USB wireless receiver keeps your desk free of clutter;Miniature USB wireless receiver.  (less)

or play. Kensington Si300 Laser Wired Mouse The Kensington Si300 Laser Mouse for PC or Mac combines the comfort a left- or right-handed design, with precision and accuracy. With a tilt-scroll wheel, laser-sharp precision, and the assurances of the manufacturer's warranty and technical support, the Si300 is a true powerhouse. The Kensington Si300 laser mouse has been designed for either left- or right-hand users, and features flexible rubber grips that provide comfort and control, as well as a four-way tilt-scroll wheel that lets you move side-to-side or up and down quickly and easily. This mouse utilizes advanced laser tracking that works precisely on almost any surface, with 20-times the surface sensitivity as an optical mouse for the ultimate in tracking precision, and includes three customizable buttons that can be easily programmed to launch favorite applications, navigate websites, and streamline important tasks. The Si300 is both PC and Mac compatible, measures 2.75 x 1.25 x 5 inches (WxDxL), and is backed by Kensington's five-year warranty and free technical support.  (less)