We know the series 2 has a barometer on it according to the ifixit teardown. Wonder if now that the series 3 advertises a working baro that the series 2 will have the baro activated. What do you think?
I'm assuming here but... in the health app go to "sources" > under devices click Apple Watch > look and see if "flights climbed" shows in the activity section
I'm assuming here but... in the health app go to "sources" > under devices click Apple Watch > look and see if "flights climbed" shows in the activity section