Well I do not know, yes ...

... But either I'm too stupid to hang the blind, or no other way. Instead 2x 80 cm I had decided on the length of 1x 160 cm. That was probably a mistake. The winding rod sags due to the length, whereby the material forms wrinkles. Visually this is not as the bearer.
From the specified length of 150 cm you can safely pull off another 4 cm. The chain could be longer. In my window which ends at shoulder height. So I have to handle considerably higher in order to pull it can.

The mechanism seems to work. It actually has 2 options to choose from - either only the adjustment in leaf width, or sometimes everything all the way up if you need a lot of light. In the long run, I can imagine that the minimum adjustment will function reliably in lamella width.

What makes something suspicious is that the edges are not missed. The grid-like woven fiber can fray at the edges and requires the handle to the scissors to cut the threads. Depends, for example, the chain between blind edge and masonry that can be tight, because you something contact the edge of the roller-blind material will have when pulling on the chain. Whether more threads will replace, I need to see.
Considered as a whole, I will probably hang the part that way, but I have presented it differently.

(I still have 2 photos of the wave drama uploaded on the product page.)
The images were removed from Amazon. Likewise, the shade is no longer offered. Should I think of my part?