Nakabayashi Digio Trackball
Nakabayashi digio trackball. This came out around 2017-08.
It's small. Bluetooth wireless, 5 buttons
![nakabayashi trackball 29063](i2/nakabayashi_trackball_29063.jpg)
![nakabayashi trackball 39028](i2/nakabayashi_trackball_39028.jpg)
![nakabayashi small trackball box 88582](i2/nakabayashi_small_trackball_box_88582.jpg)
Conclusion
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.
This trackball is tiny.