Logitech G600 MMO Gaming Mouse Black br br br 20 MMO-tuned buttons Includes unique 12-button thumb panel designed for quick no-look navigation br G-shift ring-finger button Instantly double the number of actions you can perform with every button br Built for comfort Sculpted shape and tuned buttons reduce click fatigue during marathon multiplayer sessions br Total personalization Set it up your way with customizable thumb panel lighting colors DPI levels or button assignments br Made for PC gaming Compatible with Windows Vista Windows 7 and Windows 8