Ergodox Keyboard with Trackball ⌨ ∞
The red trackball is probably from
See those 4 buttons in the middle? smash, smash!
The trackball in the middle is from
Kensington Expert Mouse.
The ring around it functions as a scroll wheel.
Ergodox Heart Keyboard
my review of ergodox at Ergodox Keyboard Review.
Shop at Xah Keyboard Store