http://www.guru3d.com/news-story/ste...ing-mouse.html

Designed to function with the natural movements of your hand, this Rival 500 is equipped with 15 programmable buttons, a high precision PixArt PMW3360 optical sensor of up to 16,000 DPI resolution, a polling rate of up to 1000Hz and a USB connector (cable length: 2m).

What?s more, the Rival 500 also comes with SteelSeries? acclaimed Prism RGB illumination with 16.8 million color options in both the mouse wheel and the logo, an on-board memory for storing profiles and SteelSeries Switches ? rated for 30 million clicks. The SteelSeries Rival 500 is available now for $79.99.