Terminated: unknown
It has a build-in battery pack, and I did not dare try to put power to it. I do not know if the calculator works, and I therefore can not tell anything about how it works unfortunately.
What I can tell however is how beautiful this calculator looks and feels. It looks like a beautiful luxurious jewel. Beautiful. It has slightly slanted keys, and it is a Scientific Calculator. It feels like something right out of Star Trek and well thought out.