Kensington Orbit Wireless Trackball
- 2.4 GHz wireless with storable nano receiver
- 2-Buttons. Customizable via TrackballWorks software
- touch sensitive scroll-ring.
- Plug and play with no drivers needed. Work with Linux out of the box.
It features a touch-ring for scroll, but many don't like the touch-ring. It doesn't scroll reliably, and when you are using the ball, it's easy to touch the ring by mistake.
This trackball is small, same size as a small mouse.
The buttons are on the sides. To press them, you have to actually hold the thing.
Ball diameter is 32 mm.