Kensington Orbit Trackball with Scroll Ring K72337JP Black

Scroll ring allows you to scroll the web or scroll up and down the Word document screen Operated with a 40mm ball designed for precise tracking and control By downloading and using KensingtonWorks, you can customize it to your specifications by adjusting the cursor speed and scrolling speed, and assigning the functions of the two buttons. Optical tracking technology allows precise and precise cursor operation. Maximize productivity and efficiency with easy operation at the touch of a finger. Symmetrical design makes it suitable for both right-handed and left-handed users