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, IntelliEye optical technology has 1 sensor and no moving parts to wear out or break. Trackball Explorer is designed for users who prefer to use their index finger to control the trackball.