MS WHEEL OPTICAL BLACK PS2/USB

Description:

Increased precision and better control: Moving parts can break or wear out with use.
IntelliEye replaces the moving parts inside the mouse with a tiny optical sensor, creating a smooth, flat underside to the mouse.
The completely digital design of Microsoft IntelliEye means the mouse will remain as responsive and accurate as it was the day it was purchased.
No more cleaning: Traditional mice feature moving parts that are
susceptible to the accumulation of dirt, dust or grime, which cause
pointers to stick or move erratically. With IntelliEye
technology, there is no mouse ball to clean and no parts to break. No need for a mouse pad: The optical sensor in IntelliEye works on
virtually every surface (see usability), thus eliminating the need for a mouse pad.