I'm wearing my Forerunner 645 day and night since I bought it a few weeks ago. Everything works fine: heart rate, sleep, stress... However, in the tab Body Battery says 'no data available'.
Am I doing something wrong?
I'm wearing my Forerunner 645 day and night since I bought it a few weeks ago. Everything works fine: heart rate, sleep, stress... However, in the tab Body Battery says 'no data available'.
Am I doing something wrong?