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Suunto 9 Peak HR is SUPER Inaccurate

Scheduled Pinned Locked Moved Suunto 9 Peak
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  • C Offline
    cs2nd @DMytro
    last edited by 22 Dec 2021, 06:28

    @dmytro I believe (and in my experience too) is that there is a delay. I believe the sensor is reading on the second, but the display refresh is delayed. I’d love to be proven wrong though. 🙂

    Suunto Race Ti
    Suunto 9 Peak Ti

    D 1 Reply Last reply 22 Dec 2021, 08:09 Reply Quote 0
    • D Offline
      DMytro @cs2nd
      last edited by 22 Dec 2021, 08:09

      @cs2nd that too is a peculiarity of all optical HT sensors, that’s why HR strap is usually better for interval training.

      C 1 Reply Last reply 22 Dec 2021, 10:26 Reply Quote 0
      • C Offline
        cs2nd @DMytro
        last edited by 22 Dec 2021, 10:26

        @dmytro you are 100% right. I personally religiously use my Polar H10. The issue still remains though, there seems to be a lag/delay with what the SP9 displays. Otherwise, yes, I trust my Polar H10 readings.

        Suunto Race Ti
        Suunto 9 Peak Ti

        D 1 Reply Last reply 22 Dec 2021, 10:36 Reply Quote 0
        • D Offline
          DMytro @cs2nd
          last edited by 22 Dec 2021, 10:36

          @cs2nd how bit of a delay are you experiencing? And how do you know that it’s a lag in the first place?
          For example, if I climb a hill, my HR doesn’t elevate for the first few seconds either, but I am quite confident that it’s due to physiological reasons and not just a signal delay.

          1 Reply Last reply Reply Quote 1
          • B Offline
            Brad_Olwin Moderator @Grayson Bangay
            last edited by 22 Dec 2021, 17:57

            @grayson-bangay I don’t care which one you have, Garmin, Suunto, Polar, Coros, TomTom, Apple, etc. The optical HR is just not that good. If you want accuracy use a belt.

            https://pubmed.ncbi.nlm.nih.gov/28538708/

            Vector/T6c/Ambit 3 Peak/S5 Copper/S3/S7 Ti/S9 baro Ti/S9P Ti/S9PP Ti/Vertical Ti/Race Ti/RaceS/Ocean/Wing

            J 1 Reply Last reply 30 Dec 2021, 17:33 Reply Quote 2
            • S Offline
              Simon Bronze Member
              last edited by 23 Dec 2021, 14:15

              Optical heart rate sensors always have a lag of about 4-5 sec. Not sure, but I believe this is currently a general technical limit for all manufacturers.

              As for accuracy: You can place the watch much higher up, where your arm is thicker. Or you can use an OHR arm sensor like the Wahoo Tickr Fit. It’s almost/comparable accurate to a chest band sensor, but less annoying. But it also has the 4-5 sec lag. It’s what I’m using and I’m really happy with it.

              Cheers

              S9P Ti - ex Altimax, A3P, SV Ti

              1 Reply Last reply Reply Quote 0
              • J Offline
                jR0n6 @Brad_Olwin
                last edited by jR0n6 30 Dec 2021, 17:33

                @brad_olwin the link is 2017 which in tech world is like 10 years 🙂

                If u looking for HR accuracy on wrist Apple Watch 6+ is very close to a chest strap… in my testing overall for a 2 Hour activity my difference to a Polar H9 was 2-3 beats (vs measures min / max)… the only issue is a lag up to 2 seconds…

                This depends of course on your fit, skin etc…in case u require a scientific test u can refer to:
                https://youtu.be/0Ub7qmZz9ec

                P.S. Peak 9 is btw not bad at all for HR (for activities where the watch is not moving a lot…)

                P.S.2.0 the best alternative if u don’t want to wear a chest strap… Polar Verity Sense, Polar OH1, or the mentioned Wahoo 🙂 in that order…

                S9P Moss Grey
                SA beta on iOS

                B S 2 Replies Last reply 30 Dec 2021, 20:23 Reply Quote 0
                • B Offline
                  Brad_Olwin Moderator @jR0n6
                  last edited by 30 Dec 2021, 20:23

                  @jr0n6 I’ve tested all of the Suunto OHR models as well as Apple Watch 5 and 6. They are about equal for what I do. The Suunto 7 and Apple watches are a tie for me. And IMHO the best belt is the Suunto Smartsensor as missed HR and HR during swimming is synced bac to the watch. The belt can be worn 2-3h without the watch and sync back HR for exercises where one does not want to wear the watch.

                  Vector/T6c/Ambit 3 Peak/S5 Copper/S3/S7 Ti/S9 baro Ti/S9P Ti/S9PP Ti/Vertical Ti/Race Ti/RaceS/Ocean/Wing

                  J 1 Reply Last reply 2 Jan 2022, 11:56 Reply Quote 1
                  • J Offline
                    jR0n6 @Brad_Olwin
                    last edited by 2 Jan 2022, 11:56

                    @brad_olwin swimming is the only thing I did not try yet 🙂 … for me the sensor of the Apple Watch is better but that 1,5 day battery life a no go… and was looking a long time for a watch that I like and the HR sensor is acceptable. S9P at least for me delivers this…

                    S9P Moss Grey
                    SA beta on iOS

                    1 Reply Last reply Reply Quote 0
                    • S Offline
                      Simon Bronze Member @jR0n6
                      last edited by Simon 2 Mar 2022, 19:25 3 Feb 2022, 19:24

                      @jr0n6 Tried the Polar Verity Sense. It’s awesome 🙌 Indeed better accuracy and more reliable than the Wahoo. Although the Wahoo is not bad by any means! And it has a longer lasting battery (20 h vs 30 h). Still, for the improved accuracy, I’ve switched to the Polar Verity Sense. Thanks for the hint!

                      S9P Ti - ex Altimax, A3P, SV Ti

                      1 Reply Last reply Reply Quote 0
                      • ? Offline
                        A Former User @Grayson Bangay
                        last edited by A Former User 2 Apr 2022, 09:45 3 Feb 2022, 19:53

                        Today first run with my new S9P (all black) via OHR.
                        I had the idea to test it with my old S9B with my smart sensor.
                        Holy shit is S9P accurate. I had nearly always nearly same values.
                        The average HR was exactly the same.
                        No drops or unplausible high values on S9P…
                        Amazing! Great job Suunto!!!

                        It was a steady run. Of course I would expect some difference in generell with every OHR device in compare to HR belt with fast sprints, unsteady sports…

                        I liked also the avg km pace of S9P.
                        Didn’t have so much jumps in the beginning of each km.

                        S9P all the way…

                        D 1 Reply Last reply 5 Feb 2022, 10:27 Reply Quote 4
                        • D Offline
                          Dimitrios Kanellopoulos Community Manager @Guest
                          last edited by 5 Feb 2022, 10:27

                          @mountainchris keep in mind that during cold days of winter ohr has flaws due to its nature.

                          Summer is super accurate

                          Community Manager / Admin @Suunto
                          Creator of Quantified-Self.io
                          youtube.com/c/dimitrioskanellopoulos
                          https://instagram.com/dimitrioskanellopoulos
                          https://www.strava.com/athletes/7586105

                          ? 1 Reply Last reply 5 Feb 2022, 10:37 Reply Quote 0
                          • ? Offline
                            A Former User @Dimitrios Kanellopoulos
                            last edited by A Former User 2 May 2022, 10:39 5 Feb 2022, 10:37

                            @dimitrios-kanellopoulos it was 5 degrees. super good! in cold winter I will still use smart sensor. One indicator for me to use OHR is never have cold hands…

                            1 Reply Last reply Reply Quote 0
                            • S Offline
                              surfboomerang
                              last edited by surfboomerang 2 May 2022, 11:12 5 Feb 2022, 11:10

                              As @Dimitrios-Kanellopoulos says…
                              Below a certain temperature OHR can become very unreliable but in warmer weather it works perfectly. Just use a strap in the winter for best results.

                              Warm weather
                              Screenshot_20220205-120559_Suunto.jpg

                              Cold weather
                              Screenshot_20220205-120644_Suunto.jpg

                              Suunto Vertical Titanium Solar
                              OnePlus Nord 4

                              1 Reply Last reply Reply Quote 0
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