Nakabayashi Digio Trackball
Nakabayashi digio trackball. This came out around 2017-08.
It's small. Bluetooth wireless, 5 buttons
Builtin Pointer Acceleration
Note, relatively high number of bad reviews on amazon. Many about bluetooth connection.
The buttons are silent. Some kinda rubber dome switch mechanism.
The scroll wheel is not notched. That is, completely smooth. You may not like that.
This trackball is tiny.
If you have a question, put $5 at patreon and message me.