After my old Siemens / Porsche kettle got serious quirks, I was looking for a new kettle. When TW86104 everything fits - the water is hot very quickly, you can fill with water well and pour out again, the water level is clearly displayed and can be particularly Goodie the water temperature between 70, 80, 90 and 100 degrees can be selected. Very handy if you want to prepare drinks, where the water does not boil. The warming function is also nice. Compared to the old Siemens / Porsche device TW86104 slightly clunky, but you get used to fast on its handling.