20 MMO tuned buttons: Includes unique 12 button thumb panel designed for quick, no look navigation; The low friction polytetrafluoroethylene feet eliminate friction on nearly any surface for smoother motions, precise cursor movements and improved accuracy G shift ring finger button: Instantly double the number of actions you can perform with every button. PTFE Feet: 250-km range Built for comfort: Sculpted shape and tuned buttons reduce click fatigue during marathon multiplayer sessions; G8 cycle modes Total personalization: Set it up your way with customizable thumb panel lighting colors, DPI levels or button assignments; Do not use a USB hub Made for PC gaming: Compatible with Windows Vista, Windows 7 and Windows 8