Corsair Raptor M40 Gaming Mouse (CH-9000041-NA) Game tuned 4000 DPI optical sensor - Highly linear tracking for accurate mouse control in games Advanced weight system - Customize both mouse weight and balance for your style of play Seven programmable buttons - Set frequently used actions, macros or keystrokes to dedicated mouse buttons for faster access On-the-fly DPI adjustment - Switch dpi with a single click for tight shots and fast getaways Selectable USB response time - Choose between 1000, 500, 250 and 125Hz Adjustable lift height - Five selectable lift height levels Soft-touch surfaces - Outstanding comfort during multi-hour play sessions 2 year warranty