The smooth interface technology is proven and here shows your undeniable advantage: the can and lid have no sharp edges. Typically ranging from a unique ambiences, if necessary just for a second time.
Criticism:
The round handle this opener feels a bit clunky: I find it difficult to keep him and at the same time to move the rotating lever, which went better with the dulled after 10 years predecessor of Tchibo.
The opener fulfilled his ministry only as long as the edge of the unopened container is not damaged and no one gets in the way when circling a possibly existing tear-off.
The dünnblechigen preserved (for example, the flat "herring in sauce" or the cans with nuts from Aldi) you get so little time to complete, the better.
Not recommended, he has been to cut off the bottoms of stackable boxes where the cutting head does not quite fit on the can wall past the curl of the smaller floor panel.