A4Tech mouse + mouse pad set, 7 buttons, optical sensor, USB, X-Game X-7120A4Tech X Game X 710BK computer mouse pad A4Tech's XGame series mouse, featuring 7 buttons, an optical sensor, an ultra fast USB connection and a number of additional perks, designed specifically for gamers and computer graphics. An additional 3XFire button allows you to fire three shots during a game with just one keystroke. The color changing DPI resolution switch (from 400 to 2000 DPI) allows you to increase or decrease the sensitivity of the mouse