Logitech Trackman Marble: So Close to Perfect - YouTube
Amazon.com: Logitech TrackMan Marble FX Trackball : Electronics
LOGITECH TRACKMAN MARBLE (USB) | Compact | 2.4 GHz Wireless | Long Batery Life | Programmable buttons | Compatible with Windows® XP, Windows Vista®, Windows 7, Windows 8, Windows 10, Mac OS® X 10.5 or later | 3 years warranty | Lazada Singapore