The G900 Chaos Spectrum mouse is trusted by professional gamers as it delivers stability, reliability and accuracy when the pressure is on. It offers you the choice to function wired of wirelessly, to suit your setup. Key features: With a 1-millisecond report rate for high-level responsiveness Fitted with the PMW3366 optical sensor - regarded as the best gaming mouse sensor on the market - to bring you zero smoothing, filtering or acceleration across the entire DPI range (200-12,000DPI) Stripped of any excess weight yet maintaining stability it comes in at 107g when wireless Ambidextrous design to ensure comfortable use for both left- and right-handed users The metal spring-tension system and metal pivot hinges in the left and right buttons provide a clear, clean click fee 11 programmable buttons Choose from up to 16.8 million colours to customise the two lighting zones System requirements: Windows 8/7/Vista Mac OS X 10.6.8 or higher 100 MB hard drive space Powered USB port Internet connection (for optional software download)