That looks remarkably like an FK-5001. Screen looks like it's there CH, just lighting is bad.
Differences...note LEDs are in the keys, and it doesn't look like the logo plate is removable (for DIP switches underneath). Also key layout above calculator looks a bit off because KB Lock and Calc Lock are one combined toggle key on this one.
(because the KB/Calc lock key is present, it definitely has a calculator)
Key profile looks a bit funny...might be Alps, might not.