No longer crisis

Just before I was going to the Post office to ship my Polar watch away, I found out that maybe I should read the booklet that followed to see if it said anything about why the watch just stopped. Well..it did.

It didn´t say why the watch suddenly stopped, but obviously it happens (since they write a paragraph about it). So I just had to push all the buttons at the same time (not just one at a time which I had tried a few times), and reset. Voila!