This Logitech M570 Wireless Trackball Mouse is a great addition to your computer setup. With its ergonomic design and right-handed orientation, it is perfect for long hours of use. The five buttons and scroll wheel make it easy to navigate through your work, while the battery status indicator ensures that you are never caught off guard with a dead battery. The laser tracking method provides smooth and precise movements, and the wireless connectivity adds to its convenience. This unit has been tested and is in good working condition.