Prima whisk with two vulnerabilities

Does what it should: attempting to unpack, connect, milk pure, pressed button - after less than 2 minutes (almost noiseless) operation was the hot milk and foam finished.
Manual does not need because it explains, for example, not know how the device (a Dutchman made in the Far East) it hires, max. 400ml only to heat and max. 200 ml to foam - both instructional texts are identical ...

And here's the first small minus: The markings for 200/400 ml are not lifted from the color gray interior coating and extremely difficult to detect, two small black lines would be helpful.
Second weakness: The cover is fixed with just two very short "naps" at Henkel, dissolves them before the mere unfolding - for me a matter of time before the ausleiert or even break off.

UPDATE MAY 18: cover still holds, but annoying. And an important tip: minimum quantity of milk not be less, otherwise it will seem too fast hot - and the machine stops without the time would have been enough to make ordinary foam.