SteelSeries World of Warcraft Legendary MMO Gaming Mouse The mouse is sleek and powerful with 11 programmable buttons, ergonomically positioned for comfortable gameplay It is perfectly sized for comfort depending on the tools that are used to explore and dominate especially for long sessions of dungeon crawling or raiding The World of Warcraft MMO Gaming Mouse (Legendary Edition) offers more than 16.8 million color options and 4 levels of pulsation including Low, Medium, High and Off. It is designed in accordance with the game that's filled with choices and personalization to suit every mood and occasion The unique in-game integration feature allows you to configure all the mouse settings from illumination to macros to button assignments directly from the World of Warcraft key bindings menu Compatibility: Windows 2000, Windows XP, Windows 7, Windows Vista, Mac OSX