Absolute crap. Eggs are even too soft, other times too hard. The Härterteeinstellung is a pure estimate iron, much too imprecise. Add to that the mess with the water. The water is not boiled, and after cooking is almost to the brim in the container. If you are not careful, spills all over. The signal is too quiet.
With my old egg cooker the measuring cup has been filled to the number of eggs, the water then completely overcooked; an egg was like the other. GREAT But this thing, absolutely no buy recommendation.