Ablenet BIGtrack Trackball
Ablenet BIGtrack 2.0 Trackball (wired version) came out around 2006. The wireless version came out in 2020-01.
- Big. 76.2 mm ball diameter
- 2 big Buttons
- ruggedly built
- Wireless version requires 2 AA batteries.
- Double right-click to activate drag-lock. Press either button to release the lock.
- Two 3.5mm mono/TS accessibility switch jacks, for extra buttons.
Amazon's reviewers say it's very bad quality, the wired version.
Ball diameter: 76.2mm (3 inches)