Not a bad kettle, but less well as a teapot

This kettle Severin (brand I did not know) heats very well, very fast. The selectable temperature from tactical buttons is significant? The problem is that it is important not to touch the glass wall that quickly becomes burning. I did not have this problèle with the isolated plastic wall of my Tefal, and I find it quite dangerous in fact when we are not careful and it heated on the kitchen worktop (where we go often to make utensils). It's a shame.

Regarding the tea service, I just wish that the infusion will take place without water movement to spread the good fragrance (some do teapot and the taste is really deeper). There, it's just like if you were asked a tea bag in a cup and was expected without stirring. Curious and rather average.