Apple Watch Ultra + Polar H10 continuously disconnects via bluetooth, any ideas?

I want to record my heart rate on runs/hikes using my just Apple Watch Ultra and Polar H10. The goal is to pair/connect the H10 to the Apple Watch Ultra via Bluetooth (as a ‘health device,’) and then use it with the Fitness app.


The problem I’m having is the watch will not pull heart rate from the H10, instead, it defaults to heart rate pulled from the watch every time. 


When I attempt to connect via bluetooth it briefly tells me its connected, then immediately says not connected. 


The watch will pull HR from the Polar when I run with my iPhone + use the Polar app, but I want to be able to run using just the strap and watch. I’ve tried resetting (both the watch and hard resetting the H10), repairing, changing battery, restarting, etc with no luck.


Has anyone else experience this issue, any ideas?

Apple Watch Ultra

Posted on Jun 29, 2023 12:29 PM

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Posted on Mar 8, 2024 7:51 AM

Hi there, I don’t know if this will help your situation, but I was absolutely furious, trying everything to get it to work. I even returned an Apple Watch and H10 thinking one of the systems were screwed up. But I just got my new one and realized that you have to be wearing the strap in order for the Apple Watch to pair with it via Bluetooth. I was trying it with just the sensor clipped onto the strap, but without having it on. And that wouldn’t work pairing-wise. I hope this helps someone who is just as furious as I was before 😡☺️

24 replies

Sep 1, 2024 11:59 PM in response to LD150

While I have found apple watch to be accurate once it gets started reading data it can take several minutes to provide readings.

This means I usually miss the first 1Km heart rate data for a walk or run.

An old Garmin edge device I can carry with me is much more reliable as it uses a chest strap and syncs with the Edge 820, however this is a bit clunky and is not easy to integrate with the watch GPS and time data feeds.

So I am thinking of looking at the Polar H10 for a reliable HRM data feed as long as it can integrate with the watch GPS data feed.


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Apple Watch Ultra + Polar H10 continuously disconnects via bluetooth, any ideas?

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