The Kensington Orbit Trackball with Scroll Ring is a sleek and efficient pointing device for computers. With a stylish black and blue color scheme and a compact design measuring 4.6 inches in length, 2.1 inches in height, and 4.1 inches in width, this trackball offers optical tracking technology for precise cursor movement. The wired USB connectivity ensures a reliable connection, while the included scroll ring adds convenience for navigating through long documents or web pages. This trackball from Kensington is a reliable choice with a 1-year manufacturer warranty, making it a practical option for those seeking a quality pointing device.