Microsoft Trackball Explorer

Trackball Explorer is a whole new kind of trackball that features the IntelliEye optical sensor popularized in IntelliMouse Explorer. With an integrated sensor tracking movements at a rate of 1,500 frames per second the trackball has superior accuracy and precision. While existing mechanical trackballs have many moving parts to break and wear out, IntelliEye optical technology has one sensor and no moving parts so it won’t wear out or break. Trackball Explorer is designed for users who prefer to use their index finger to control the trackball.