This wireless trackball mouse from Elecom Japan in black is perfect for left-handed users. The EX-G series model M-XT4DR-BK has a unique design and features a trackball for precise movement. It is compatible with computers, tablets, and other devices that support wireless connectivity. The mouse is in good working condition, and has been used previously by a careful owner. The Elecom wireless trackball mouse is a great addition to any workspace, particularly for those who prefer left-handed use. With its sleek black design and precise trackball movement, it is perfect for those who need a high level of accuracy in their work.