The pot is plane and is thus just on my ceramic hob. The floor thickness is sufficient to ensure a good heat storage.
After several months of use, and some Spühlmaschienengängen no no rust on the pot or lid can be seen. The cover fits like a glove on the pot and the inner edge has a drip shield for condensation water formed so that when lifting the lid water from dripping down.
With prolonged use on the stove and heat the large handles can be very warm, so it is emfehlenswert then to use potholders. This also applies to the lid.
Conclusion:
Good workmanship and accustomed WMF quality at a fair price for a long service life