Sanwa Supply Wireless Trackball (Silent, 5 Buttons, Thumb Operation) MA-WTB185BK

This trackball lets you control the cursor by rolling the ball with your finger. It is thumb-operated, allowing for relaxed use without exerting force. Its ergonomic shape fits comfortably in your hand with just a light touch. It features a medium-sized 34mm ball that is just right for movement with your thumb. It comes with two receivers: a USB A receiver and a USB Type-C receiver, allowing you to switch between connections for use with two devices.