The AZiO GM2000 gaming mouse uses an optical sensor and features an ergonomic design. The AZiO Levetron GM2000 has on-the-fly DPI adjustment capability and can switch between 800, 1600, and 2000 DPI levels. On the left side, the AZiO Levetron GM2000 mouse has back and forward buttons for convenient navigation or as additional inputs while gaming. Requiring no software or drivers for full functionality, the AZiO Levetron GM2000 gaming mouse is plug-and-play, fully compatible with Windows XP through 8 as well as MAC OSX 10.2 or greater. Aimed at budget enthusiasts, the AZiO Levetron GM2000 gaming mouse carries a 3-year warranty.