Edit 04 March: Since a few days, the watch seems to randomly stop for a while when stored in its box (with the power reserve not depleted yet) and then after a while it continues running. Not sure why. Have not seen this happen while wearing... Definitely needs a service then, and therefore sold "as is".
For this reason, I put the watch on eBay auction starting at €1,-.
Edited by a mod Jun 1, 2023