Kensington Wireless Trackball Original Orbit Mouse 2.4GHz+Bluetooth with Scroll Ring for AutoCAD K70992/K70993 - AliExpress
Amazon.com: Kensington Orbit Mouse - Wired Ergonomic TrackBall Mouse for PC, Mac and Windows with Scroll Ring, Ambidextrous Design and Optical Tracking - Blue (K72337EU) : Electronics