@Speed-Man Maybe I haven’t explained myself clearly but I do know the diferences between both technologies, and as I said I do use the chest strap when I want to have the ZoneSense information, for the rest of the cases I use the OHR armband. Previous to my SVTS the wirst OHR was very bad for me and the chest strap makes me a nasty sore during the hot months of the year, that in my area could be from April to October. With the SVTS the wirst OHR has improved greatly but it still fails a lot of times for me, the armband is very comfortable and convinient for me. Regarding the accuracy, bpm values are at par with the chest strap in most of the ocasions except in interval sessions where it lags behind the chest strap, not in the values but in the responsiveness.

@elbee Thanks for the insight! That definitely sounds plausible. I’m still going to keep tinkering with it and hoping it cooperates properly at some point, but it’s good to know I’m not the only one running into quirks with it.

I checked runs from Spring in this year. In April, with apparently the same setup, the R-R data recorded by the 9 Peak Pro looked normal. The recent recording contains repeated missing or corrupted R-R intervals and implausible HRV values. So it doesn’t look like a Firmware thing cause the major BT updates happend in Sept 25 and in January 26 April [image: 1785265928172-8e88a92f-036e-4a19-baf4-bdf31fd1923b-image.jpeg] Juli [image: 1785265951381-8f441eff-fefb-434d-ade5-fafcc40a355e-image.jpeg]

@vinc14 I’ve got the same problem: my son jumped into the swimming pool, but in my case the HR was actually closed properly, although there was water in the battery compartment as well. So I think the problem might not be that it didn’t close properly, but rather a fault with the HR IP’s seal. I’d send it back to Suunto, but the problem is that I can’t find my invoice any more.

The replacement charging cable for the Vertical 2 is still not available in Türkiye. They said it will be available soon. We’re waiting.

Here is the photo of the other watch I found on eBay. [image: 1782430445459-5681d8dd-d3d3-4f45-9151-e77c3eec8da0-image.jpeg]

@Mauerwegler Hey guys, late response, but could help others as the app and docs aren’t intuitive. To pair the sensor, go to the app settings, then go to Activity & training, and click Pair HR sensor. Hope it helps. I don’t know why it’s not located with the pair device button on the home screen. I also searched for quite some time…

@Elipsus no worries, I just shared the “why” : )

@Francesco-Pagano Grear color match Even though I’m more of a nylon strap guy, I find Race 1 straps great. Also, Vertical 2 straps are worth checking out.

@halajos Looks very much like clone, or exactly the same product under different branding, of Morpheus M7 HR belt. Morpheus works great for ZoneSense, plus I haven’t experienced any drops or disconnections like many people report here with their Suunto belt or Polar H10. Around $40, looks like a solid choice compared to M7 at ~$100.

@2b2bff Interesting, that’s good to know and I might give the Coros HRM a try whenever the Polar decides to pack up. With it on my upper forearm it doesn’t bother me at all, if I’m wearing long sleeves it just sits underneath whatever I’m wearing

@Mattg576 Thank you! I bought a similiar to 8 from china online store and for sure it is not as good as a original one.

@Blaz-Kelbl Hi. All the watches I have used (Suunto, Garmin, Polar) cannot measure heart rate from the wrist properly. Sometimes they succeed very well and sometimes very bad. Heart rate belt is the only way if you need/want exact reading. Best Regards Pasi

@cosme.costa Having Suunto OHR armband would be cool. Sorry being offtopic

@PIPA44800 exactly, this is not a support but a Community forum.

@Doron-G I have a few of these but they are gone from Suunto store. I would try to check Suunto outlets/dealers.

ah okay, thanks for the replies. That is unfortunate. It happened twice already that I didn’t manually switch to the other device (i switch between the two every day so they can properly dry before I use them again) and I only got pulse based heart rate without zonesense for the activity.