We are proud to be associated with some of the best players in the world of eSports. We maintain strong relationships and have continuous dialogue with teams like Natus Vincere, SK Gaming, Fnatic, Evil Geniuses and others who help in the development and improvement of our products. To ensure maximum performance in all gaming scenarios we enlisted help from world-class StarCraftÂ® II, Counter-Strike, DotA, League of Legends, Heroes of Newerth, WarCraft III and Doom players. The SteelSeries Kinzu v2 is designed for extended use. Its ergonomic and ambidextrous design makes it a natural fit for both right and left handed users. The SteelSeries Engine allows you to customize your mouse settings like never before. With the SteelSeries Engine installed you are able to: Set custom CPI settings, Program your mouse buttons, Set polling rate, Record macros, Track button usage statistics, Set game triggers for profiles The centrally located toggle button allows you to quickly switch between two sensitivity settings. The pre-defined CPI settings in the Kinzu v2 are used and recommended by professional gamers all over the world. These CPI settings are also easily adjustable if you want to personalize your Kinzu v2 via the SteelSeries Engine software. Material: high performance UPE material covers 16 % of mouse bottom to ensure maximum glide. We recommend changing glides regularly as they will eventually be worn down. The SteelSeries Kinzu v2 is made to be stable on every kind of surface with the help of its optical sensor. This sensor is also designed to eliminate jitter and provide optimized stability for the user.