I have a Fenix 5 and the Garmin Dual HRM chest strap. I don't like how the Fénix 5 sensor measures me, I think it's a problem with my narrow and bony wrists.
Is there a way to tell if the FCC measurement during an activity is being done by the Garmin chest strap or wrist sensor? When I change the battery to the HRM it does strange things (especially at the beginning of the activity) and I don't know if it measures correctly despite the "fcc monitor connected" warning. I would prefer to be able to see it on the watch during the activity but even later in the app it works for me.