Impecca WM800N, is the impeccable solution for moving through your documents quickly without having to click on the scroll bar. The numerical keypad embedded in the mouse provides for easy numerical calculations, right at your fingertips. Experience ultimate performance with Impecca's Numerical Accountant Mouse. High definition for precise movement. No mouse pad needed. Impecca's Numerical Accountant Mouse works with your computer, right out of the box. The WM800N Numerical Accountant Mouse is the perfect solution for navigating your computer!