From few days (1st of Sept), when I go running, I got some unexpected alarm (vibration + bip). Nothing is displayed on the screen. After some check, I found that it happens when my HR is over 165. I don't why this value given it is middle of an HR zone, not the limit between Z2 and 23 (for example). Today I had to run more than 4km with this alarm permanently. I don't have any alarm configured and so far my watch was only doing noise/vibration for auto-lap.
Any suggestion before I try the factory reset?
Thanks,
