I've caught a strange glitch several times, perhaps it's known. I have my wife's default notifications set for 5 km on a bike and every 1 km on a run. And several times it happened that after such a notification at 50 or 70 km the watch turned off. I thought that I didn't notice how they discharged. But today the watch cut off after 5 km of running, I tried to turn it on, the gray triangle of the Garmin was burning for a long time, and the watch turned on again, showing 4.96 km. I did not complain, and at 5.00 they beeped and turned off again. Then I repeated this cycle again with the same success. What can I do with them? Try resetting?