Ergonomic design Designed to suit for both hands. Extremely comfortable grip for the perfect game control. Accurate navigation Professional gaming optical engine ensures accurate tracking, anytime, anywhere. Adjustable high-definition tracking engine Adjustable DPI ensures accurate tracking. You can instantly switch between 750, 1350 and 2000 DPI. Cool breathing backlight The breathing backlight with cyclical changes brings wonderful visual effects. No driver required, just plug it in and go. Life can be that easy.