Rock-solid performance for when your sights are set on victory. If you liked the Logitech MX518, you"ll love the G400. You get the features you"ve come to rely on with improvements in precision and speed. Features: * 300 DPI optical engine * 1 millisecond report rate * Sculpted comfort grip * Polytetrafluoroethylene low-friction feet * In-game sensitivity switching * DPI shift with a single button press * Eight programmable buttons * Buttons rated up to 10 million clicks and feet tested to 250 km * Easily customize your mouse to every game you play with the optional Logitech Gaming Software * System requirements: Windows XP, Vista, 7; USB port; internet connection (for optional software download) What"s In The Box: * Logitech 910-002277 G400 Optical Gaming Mouse * User documentation