CONDITION NOTE: The item appears unused, however, the back plastic is opened. Manual is contained. Excellent condition. The Logitech Trackman is a corded USB trackball designed for fast, precise fingertip control. It features an amofferextrous shape engineered for long-lasting comfort in either hand, a red trackball for smooth cursor movement, and convenient web surfing buttons for navigating forward and back. This model is the Trackman T-BC21, part number 910-000806, and connects via a wired USB cable with no batteries required. It is compatible with Windows 10 or later, Windows 8, Windows RT, Windows 7, macOS X 10.5 or later, and Chrome OS. The package includes the trackball and documentation.