Less impressed by the design and the related black plastic material which acts already very cheap at first glance. In the meantime, the price of initially EUR 60 was reduced to less than 40 EUR. For such a design is probably still tolerable. But the origin price I would have definitely taken off two stars, so account for a star for the design.
Schön is the single-cup option. While it is with other cookers cook less water than the manufacturer recommended, but this one is then usually well below the minimum amount of approximately 0.5 liters and otherwise would probably not be surprised if the device but rises times in flames. The Tefal stove to such small amounts can now with a clear conscience prepare a shortfall of the minimum amount is no longer necessary.
The speed of cooking Tefal kettle is ok, but not faster than other kettles.