Product Description Corsair Raptor M40 (CH-9000041-AP) Gaming Mouse 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 2 year warranty Adjustable lift height – Five selectable lift height levels Soft-touch surfaces – Outstanding comfort during multi-hour play sessions