The Logitech Trackman Marble USB Trackball Mouse 2015 910-000806 is a mouse with a unique trackball design, allowing for precise control and easy navigation. It comes in a factory-sealed box and is available in red, gray, or white color options. This mouse features a maximum DPI of 300 and includes side-to-side scrolling capabilities for added functionality. With connectivity options including PS/2, wired, and USB, this Logitech Trackball Mouse is a reliable and versatile choice for users looking for a comfortable and efficient pointing device.