The Microsoft Wireless IntelliMouse Explorer throws out all the old, mechanical technology used in current mice. High-performance optical technology - no mouse ball. IntelliMouse Explorer uses a new optical sensor called IntelliEye. This sensor scans the surface beneath the mouse 1,500 times per second to accurately and crisply track the smallest motion. It works on hundreds of surfaces (i.e., no mouse pad required) and stays precise because there are no moving parts to wear out or stick. No moving parts - replacing the mouse ball with an optical sensor means there are no moving parts to collect dirt, dust and
