Used - Like New: Logitech Cordless TrackMan Optical Trackball - Newegg.com
A size comparison between the Logitech Cordless Trackman Optical, the Microsoft Trackball Optical, and the Elecom Huge, for if anyone is curious. : r/Trackballs
Logitech Cordless Optical Trackman.
trackballs&mice: including MS Trackball Optical, Logitech Cordless Optical TrackMan / TrackMan Wheel etc. - deskthority
Best Buy: Logitech Cordless Optical TrackMan Trackball Black/Gray 904369-0403