If anyone still doubts this, I just dug my Sophia out of storage to take a photo. You'll see the step-down transformer I use to power this operates at 110-120V.
Here's the US/European manual:
And guess how many countries run 135V mains? Yup - none! There are countries running 127V and countries running 220V, but none use anything in between... with the exception of a couple of countries with rather dodgy 220V supplies!