Also negatively evaluate the much too dark water level indicator. In the illustrations on the Internet is a much lighter blue than to see on my device! I look at the interior of the vessel when filling.
A comprehensive instruction manual - in particular a figure how to use the scale filter properly - would be helpful.
Positives: The pouring works flawlessly. The water boils in a timely manner. But you must surely expect safe with a device in this price range.