The 5600 DPI setting may make you grab hold of your monitor to keep you from getting dizzy, but that is a small price to pay for a superior "one size fits all" type of mouse.
Fits perfectly in the palm of my hand; Comfortable; Does not just move across my mouse pad; it glides; "On the Fly" DPI adjustment; 5600 DPI capabilities
No included driver or software disc; The mouse wire lead seems a bit stiff