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    Suunto 9 Peak HR is SUPER Inaccurate

    Scheduled Pinned Locked Moved Suunto 9 Peak
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    • Brad_OlwinB Offline
      Brad_Olwin Moderator @Grayson Bangay
      last edited by

      @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

      jR0n6J 1 Reply Last reply Reply Quote 2
      • SimonS Offline
        Simon Bronze Member
        last edited by

        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
        • jR0n6J Offline
          jR0n6 @Brad_Olwin
          last edited by jR0n6

          @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

          Brad_OlwinB SimonS 2 Replies Last reply Reply Quote 0
          • Brad_OlwinB Offline
            Brad_Olwin Moderator @jR0n6
            last edited by

            @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

            jR0n6J 1 Reply Last reply Reply Quote 1
            • jR0n6J Offline
              jR0n6 @Brad_Olwin
              last edited by

              @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
              • SimonS Offline
                Simon Bronze Member @jR0n6
                last edited by Simon

                @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

                  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…

                  Dimitrios KanellopoulosD 1 Reply Last reply Reply Quote 4
                  • Dimitrios KanellopoulosD Offline
                    Dimitrios Kanellopoulos Community Manager @Guest
                    last edited by

                    @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 Reply Quote 0
                    • ? Offline
                      A Former User @Dimitrios Kanellopoulos
                      last edited by A Former User

                      @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
                      • surfboomerangS Offline
                        surfboomerang
                        last edited by surfboomerang

                        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

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