Interchangeable gripsGaming-grade laserOnboard memory to save settingsWeight tuning to personalize feel and control of mouseAdjustable sensitivity; shift from pixel-precise targeting (200dpi) to lightning-fast maneuvers (up to 5700dpi)Dual-mode scroll wheel with precise click-to-click and hyper-fast scrollingSuper-slick (Polytetrafluoroethylene) feetWorks with Windows 7 XP and Vista Includes wide load and precision grips weight-cartridge tuning weights and case