The Vintage 90s A4 Tech WWT-13 Scroll Track 4D TrackBall Large Mouse is a unique piece of technology from the 90s, featuring a trackball mechanism for precise mouse control. This mouse comes in a stylish gray color and offers programmable middle button functionality, along with a comfortable grip design. It also provides 100% Microsoft wheel functionality and dual wheels for smooth and precise cursor movement. With its mechanical tracking method and PS/2 connectivity, this A4 Tech trackball mouse is a nostalgic and functional addition to any computer setup.