Am American. I have one of these:
Not that exact model, but that brand. It's basically a thermos / dispenser that keeps water hot all the time and available at the press of a button. It can hold water to different temperatures based on your needs (I keep it near boiling for coffee pour-overs and black tea.)
This seems like an overkill product, but the US's 120v power makes it much less quick to heat up water with a traditional kettle, so when I had a regular electric kettle I didn't drink much tea. This makes the process so much quicker, and is also useful for things like ramen, or anything else you just need a little bit of boiling water for.
These aren't common in the US, btw. Moreso in Japan. I just happened to have a Japanese coworker for a time and got introduced to them. Then I wound up buying them for allot of family members as housewarming gifts, and it's always the same story of "I thought this was a weird gift at first, but now would never
not want to have one of these around."