with cute, not-so-tiny bubble memory modules. S l o w yes, but - so was the CPU - then. Think LCD screen was about 16 lines high.
Geetin senile - think it ran MSsssDOS 1.0, but mainly useless as tits on a board. But! - the bubbles indeed stayed in place with power off. Eventually swapped it off to a 'consultant' for another Otrona ;-)
A.