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</br></br>Product Description</br></br>With 20 buttons?? the Logitech G600 MMO Gaming Mouse is the most customizable and easy-to-use mouse specifically designed for mastering your favorite MMOs</br><br/>http://www.amazon.com/gp/product/B0086UK7IQ