I'm trying to see if the fenix 5 will work fine (meaning all features supported) with the older version of the HRM-RUM (sensor can be removed from strap).
According to Garmin's site, the newer HRM has more features (ie ground contact balance), but I know people that get those metrics with the older strap as well.
Can someone check this for me. I'd like to go for a version without the HRM now (and maybe get the tri version later for the summer swims).