The silver-colored cap can be screwed so that it breaks down into two parts. Then pull on the part of the thin thread out, truncates the, makes back inside a node. Then do the same on the other side: Pull out the leather strap, buckle the metal bracket something, cut, metal clip drum turn back and all the push back into the sleeve. The two sleeves screw again, ready. With a tiny bit of technical skill in a matter of 5 minutes.
OK, I admit it: very few mobile phone owners want to cut their mobile phone strap only. But I actually just wanted something because I need a very specific length. And any other mobile phone strap was either too long or too short ...
So if you like tinkering itself times, it's no wonder.