oh ... I've spun it around a maximum of 15 times, and I haven't worn it at all since then ... so I understand that's the "problem" from here?
And after all, how many times does it have to be winded to fully charge? I mean 360 rotations.
yes, that is the problem. You never fully wound the watch, then never wore it to let the auto-mechanism charge it up (I assume this is an automatic), so there is only a little energy in the mainspring.
wind it 50 or so times (360 degrees) and you will ensure it is fully wound. But if you don’t wear it for several days, it will run down and you need to wind it up again.
I understand, yes it's an automatic. But is there a possibility of over-wind if you wind it more than 50 times, or does it have a protection?
It has protection. You can't over-wind.
