One of The Most Comfortable & Ergonomically Computer Trackball Designs Today! A specially Ergonomic Trackball Design, can be used by Right or Left Handed People. All Electronic Accessories is Superb Quality Mouse Trackball Features High-tech, State of The Art Microcomputer design. Ergo-3 Can be easily redirect the button function, and used by Right or Left Handed People. DETACHABLE WRIST REST For Best Wrist Comfort 3 Rugged Tactile Click Micro-Switch Keys. Precise Movement with Opti-Mechanical Technology Ergo-2 is USB/PS-2 Compatible. For Windows 98/SE/ME/NT/2000/XP. Works with both PC's and Macintosh The Space-Saving Alternative to a Mouse! Ergonomically shaped. Scroll lock Button (Ergo-3 only) can scroll ( web or e-mail ) up or down, with the speed you like, without holding any buttons! Up to 6,400dpi Extreme Dynamic Resolution. Easily Programmable 3rd button, Software included (Ergo-3 only) Ergo-3 is Serial PS/2 and USB Compatible For Windows 98/SE/ME/NT/2000/XP. Works with both PC's and Macintosh
