Logitech Wheel Mouse
 Optical, PS2 / USB, P/N: 930495-0403
 

$ 19.95

 Optical Precision and Maximum Performance
    * Tracks motion optically without a ball
    * Optical sensor with up to 800 dpi; twice the speed, twice the accuracy
    * Fits right and left hands
    * Three buttons
    * Scroll wheel
    * Five-year warranty
MouseWare® Software included:
    * WebWheel™ software for smarter Internet browsing
    * Easy scrolling on the web, in Windows® and Macintosh® applications
    * A variety of button assignments to customize your mouse buttons
    * Online registration with Logitech.com
Specifications:
    *  Internet Service Provider (ISP) account required for full WebWheel™
       software functionality
System Requirements:
    * Windows® 95, 98, Me, NT 4.0, 2000 and XP*
    * Windows® 3.1 / DOS for basic functionality
    * Macintosh® with Mac OS 8.6 or later with USB port 
    * Available PS/2 or USB port
    * Requires CD-ROM drive to install MouseWare®
    * USB requires Windows® 98, Me, 2000 or XP