Control your game: Instantly switch between six DPI setting to quickly respond to your gaming demands for targeting, maneuverability or speed., Play to your full potential:High-definition(4000 DPI) optical tracking delivers more responsive cursor control, The scroll wheel's LED identifies what DPI is in play by it's specific color for easy recognition, Contoured comfort: An ergonomic design optimized for all-day gaming comfort in either hand., Built to last: Gaming buttons rated at up to 20 mill.