The Kensington M01555 Orbit Trackball Mouse is a sleek and ergonomic mouse designed for comfort and precision. With a 6-inch length and 2 1/2-inch height, this black mouse features a trackball for easy scrolling and a scroll ring for added convenience. Its wired USB connectivity ensures a stable connection, while the optical tracking method provides accurate and smooth cursor movement. Made in China, this mouse has two buttons and is perfect for those looking for a reliable and efficient pointing device.