The Kensington K64327 Orbit Optical Trackball Mouse is a stylish and functional device that offers a unique trackball design for precise and smooth cursor movement. With a sleek silver color and a comfortable ergonomic design, this mouse is perfect for long hours of scrolling and clicking. It features programmable buttons, a scroll wheel, and side-to-side scrolling for added convenience. The mouse also includes a wireless USB or PS/2 connectivity option, making it easy to use with various devices. With a maximum DPI of 1600 and a 2-year manufacturer warranty, the Kensington Trackball Mouse is a reliable and versatile choice for your computer setup.