The Microsoft Sidewinder series gaming mice and keyboards are top of the line gaming products that are excellent additions to any gamer's computer system. The Sidewinder X6 gaming keyboard is packed full of assignable keys that can be programmed with many different options or Macros. The Sidewinder X8 Wireless Gaming mouse has 7 programmable buttons and the ability to select from 3 different dpi settings (up to 4000 dpi) at the touch of a button. The performance of the X8 mouse coupled with the features of the X6 gaming keyboard make a heavenly match for the gaming enthusiast.