Fourth Frontier X2 strap not working with ZoneSense
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Hi all, I’m using FourthFrontier X2 with my Suunto Vertical and noticed that only HB rate is tracked while no information about HRV (r-r) is provided.
I reached out to Fourth Frontier support and they said this is a limitation, HRV info is only available via their app, not sent to other devices or apps.
While I was finding useful the FFX2 recording via the FF app, I need the HRV information to be available to the watch as well. ZoneSense works fine with any HR belt and not with FFX2.
I recently stopped using FFX2 in my running exercises and moved to a Polar belt, which is sad because FFX2 is great at recording HR, breathing rate and shocks…
Do you know if there is any workaround to this? (other than running with 2 belts obviously!
)Or is Suunto able to reach out to Fourt Frontier and get this feature prioritized?
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I’d suggest the ball is entirely in FF’s court on this. If they update the firmware on the belt to include the RR data in the bluetooth stream then it will start working with ZoneSense.
If the data isn’t there then Suunto can’t do anything.