Microsoft IntelliMouse Explorer is Microsoft's award-winning optical mouse with a new design featuring unique comfort enhancements and is supercharged with Microsoft's new proprietary IntelliEye optical technology - the most powerful in the world. The new design of IntelliMouse Explorer leads in comfort and style, adding enhanced grip support, finger grooves and a new curvy shape to its signature titanium silver shell and glowing red underside. Microsoft's IntelliEye optical technology marks a major milestone in the optical mouse category, taking mousing to the next level and giving IntelliMouse Explorer unprecedented performance, accuracy, and control.