One of the main features that the G3 strongly addresses is DPI tracking. With a cutting-edge 2000 DPI laser tracker paired with a 6.4 megapixel-a-second image processing engine within, the G3 will surely keep up with the strenuous finger acrobatics aligned with gaming. To harness all these new found powers, Logitech also included a shortcut button smack right bellow the scroll wheel to lower or increase sensitivity in a split second for those tricky sniper scope shots and giving you the extra edge in those crucial moments..



Link: HardwareZone