I remember they had a demo of one of those in our local Kmart. (Which I also remember.)
5-6 years after that, my dad brought home a portable Compaq PC-clone home from work; it looked similar IIRC. We’d play “Wheel of Fortune” on it, even with its monochrome display.
Not portable, but before that we had DECMates and a C64, plus this which is now in my cellar:
As of 3-5 years ago it was still operable.
