Have I bought this bracelet on 28.12.2013 and often worn, the lock is easy to operate. I have never had the feeling he'd just absorbed so. Of course it kommts on what you do while wearing the bracelet, from time to time it can sometimes be slightly loose, but then you just pull the knot tight again.
So far I have never lost it, or even the slightest hint verspührt that it is loose.
The sign is not broken, disposed of, or whatever else for over a year.
I am very happy with it and would highly recommend it.