Can you specify the exact model you tested in the video and what it says on the rear side regarding the voltage?
I bought in US aunt model CUH-1001A. On the rear plastic it says "120V" only, and the manual for CUH-1001A specifications show also only 120V.
Is this the same model as you tested? If so, I can assume my internal power supply is 100-240V as in the tested unit, if not - I may have to buy a voltage transformer.