Mhm, thank you very much for the feedback so far. My question is more about the GPS function. Theoretically, I could use the GPS localisation from my mobile during a run, or would I not have to activate it in the smartwatch? Am I possibly making a naive mistake here?

I have two watches of this model and they both last about 2 weeks without charging, with an average of 5 hours of sport per week. There are functions to increase the battery life, even if it's not very useful given its autonomy.

The battery lasts about 1 week if I run for about 9 hours a week.