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Preferred activity tracker setting and TrueUp

I use a FR945 and a Fenix 5 Plus, each about 50% of the time. Does it matter which one I set as 'preferred activity tracker'? From the manual I figured that VO2Max and updated HR zones would sync from the one to the other, but that doesn't seem to work, so I wonder if I set the wrong one as 'preferred'.

  • It doesn't matter for performance metrics like VO2 max, HR zones etc. You need to enable Physio TrueUp on both and make sure you sync every time you switch watches. If it doesn't work then disable Physio TrueUp, sync, enable Physio TrueUp and then sync again. on both watches When I switch device I always check that the Training load value is the same on both devices before I start a new activity.

    The watch that is the preferred activity tracker is the one that is used for stress, sleep and other health metrics. I'm not sure about steps. That value seems to work no matter which device is the preferred activity tracker but it needs to be tested.

  • Thanks, disabling/re-enabling True-Up worked. I didn't look at steps in detail, but at a glance, the number seemed to update on both.