Vertical + Suunto Smart HR Belt = connection issues!
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I use a Suunto Vertical (latest firmware) and a Suunto Smart Heart Rate Belt (2024). About every third workout, even with a new battery, the watch loses connection with the belt (or vice versa) during the session — and never reconnects
Despite the belt’s internal memory, heart rate data isn’t synced to the watch afterward.
Probably the only workaround is to end the workout and start a new one, which isn’t always possible, depending on the activity. During volleyball game it is impossible and not only then.
This is incredibly frustrating.
Has anyone found a reliable fix or workaround for this issue?
Vertical Solar / Baro 9 Tit. … and in the past a lot of others Suunto dev. ;)
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@aslysz I would bet that both your Vertical and HR “button” unit are OK. The stretchy chest belt is usually the culprit, probably some internal connection problems. I had similar symptoms back in the days with my S9B. I bought a replacement belt and everything’s been just peachy ever since. And it’s not only me, other forum users have confirmed this.
Can you borrow another belt from a friend and see if it gets eny better?
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@BrunoH said in Vertical + Suunto Smart HR Belt = connection issues!:
he stretchy chest belt is usually the culprit, probably some internal connection problems.
Thank you, I didn’t consider that reason.
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@aslysz I have just experienced the exact same problem. I am using a brand new belts so I can’t see that being the problem. I have just bought the suunto belt to replace a wahoo one that was intermittently dropping connection but would reconnect after a few minutes. This seems to be a problem introduced in the last few firmware updates.
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@aslysz I have the same problem : Vertical + Suunto Belt. Everything pairs perfectly and during every workout disconnects and never reconnects again. What is funny the belt can be discovered with my phone or other devices. Belt is perfectly fine - that doesn’t happen when it is connected to my Hammerhead computer- it reconnects without any problem.
It has to be related to vertical BT software and Suunto does nothing about it…
The only workaround I found is to change the battery mode that will turn off Bluetooth and then turn it on back -it should reconnect.
This is extremely frustrating as the problem lasts for months now!and I started to look for garmin watch
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This is a problem with almost all recent suunto watches. A late 2025 firmware, with a complete redesign of the Bluetooth stack, is the suspected cause. So, the problem exists for over 10 months now.
A couple of days ago, the new run 2 firmware update mentioned fixes in the bluetooth stack.
When, and for some watches if, that fix also comes to other watches is unknown.
In my experience (with a race s and a polar oh1+) is that frequent reboots (I now reboot every time I charged the watch) seems to mitigate the problem. Not ideal, but better than nothing.
Btw, garmin watches have other problems and annoyances. And cost a fortune. Garmin support is just as bad as suunto support (both are worthless)
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@elbee thank you for your answer! So you suggested after charging the watch how many times I have to reboot it? 8? Better than nothing.
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@elbee thanks god it was a typo! Really thought have to do it several times
I was considering Fenix 7 pro, now it has quite reasonable price and far better wrist he than suunto -
Unfortunately, same here.
Suunto Vertical with Suunto Smart Sensor and Polar Verity Sense.
If the connection is lost, it won’t reconnect again during the exercise. The only solution is to start an new exercise.
Another problem with this is that the Smart sensor memory function doesn’t work almost at all ( I use it for futsal and leave the watch in the locker room). After the match most of the hearth rate data is missing. Only the start and end data are correct.Hope Suunto will fix this, but I’m not holding my breath.
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Unfortunately, same here.
Suunto Vertical with Suunto Smart Sensor and Polar Verity Sense.
If the connection is lost, it won’t reconnect again during the exercise. The only solution is to start an new exercise.
Another problem with this is that the Smart sensor memory function doesn’t work almost at all ( I use it for futsal and leave the watch in the locker room). After the match most of the hearth rate data is missing. Only the start and end data are correct.Hope Suunto will fix this, but I’m not holding my breath.
On which firmware is your verity sense ? check this thread
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