Lightweight at 105g and a contoured shape that\'s sculpted specifically for palm-grips and larger hands. Custom Pixart PMW3391 native 18, 000 DPI precision optical sensor with 1 DPI resolution steps for ultra-accurate tracking and performance. Ultra-durable Omron switches rated for more than 50 million clicks. Seven fully programmable buttons to customize the way you play, with powerful macros or key remaps giving you an in-game advantage. Dynamic, two-zone RGB backlighting with dozens of customizable presets and effects. Intuitive and powerful CORSAIR iCUE software enables vivid dynamic RGB lighting control, sophisticated macro programming and full-system lighting synchronization compatible with CORSAIR peripherals, coolers, fans and more. Onboard profile storage lets you take your settings with you, with hardware macro playback and lighting control. Surface calibration utility to maximize precision and responsiveness