Real world data

[Dimitrios Kanellopoulos]

@mff73 oh you refer only to gps altitude right ?

[Mff73]

@dimitrios-kanellopoulos
Not really, I compare GPS altitude (registered by S9P) with “fusedalti” saved altitude.
And there is quite a “big” of difference.
Isn’t it? Or it seems normal?

[Brad_Olwin]

@wotus Why are you using Endurance mode? It is not meant for cycling as FusedTrack will not work. Endurance mode is typically for running/hiking.

[wotus]

@brad_olwin Because I’ve been so used to the ambit3 in the last few years to reduce the GPS accuracy from best to good without noticeable loss of track quality in order to extend the battery life without any difficulties and now I wanted to test it with the new suunto9p.
It is very useful that I can now change the battery mode during activity, but unfortunately with more disadvantages than I thought.

[Brad_Olwin]

@wotus The Endurance and Ultra modes on the S9b are far better than the 5s fix on the Ambit, I have used both quite a bit and was always frustrated with the Ambit. What are the disadvantages? From my perspective there are none.

[wotus]

@brad_olwin At the moment I see problems with too insensitive autopause and frequent and long signal losses when cycling with reduced GPS accuracy, as disadvantages. But these are luxury problems in case the battery charge should be too low for the performance mode.

[Brad_Olwin]

@wotus You can charge your watch on the fly. I don’t like doing that running but I would do it on a bike.

[chrisc92]

@wotus now autonomy in performance mode is near 25 h ; for the ambit3 it was 20 h that’s quite enough for a long bike ride

[chrisc92]

@chrisc92

Here is the Sunnto 9 Peak Wrist Optical HR record for my easy run.
S9P OHR Vs. Polar H10

this is the first time in my 8 years background of HR sensors tests that I have such a precise curve, with Suunto or Garmin watches and sensors. There are 2 small peaks but it’s probably when I checked my wristband to see if there was sweat and if it was tightened .
Outside temperature was also 13/16 Celsius so there was no sweat between my skin and the sensor.

I have now to test specific interval training to see the reactivity of changes, but this seems very promising.

[wotus]

@chrisc92 For longer rides like FischKona (600km) it may be not enough and I would take the endurance mode from the beginning.
My Ambit3p was set to GPS Good (5s fix, 30h battery life, recording intervall 10s) and the track quality was near perfect like the S9p in performance mode.
But now the endurance mode in S9p is not very usable for cycling, as I know it from the A3p.
I didn’t expect there to be such essential differences?

[Dimitrios Kanellopoulos]

@wotus are you using HR ?

[wotus]

@dimitrios-kanellopoulos To have a direct comparison, I did not use HR in endurance mode on the first ride, but in the following ones, because without HR my energy consumption is usually counted with zero calories. Regardless of this, the track quality remains equally inaccurate.

[Dimitrios Kanellopoulos]

@wotus I am asking because without HR the s9P should get you more than 30h in best.

[Dimitrios Kanellopoulos]

@wotus is the plan to use the watch as a bike computer or as an accessory ?

[wotus]

@dimitrios-kanellopoulos Without HR it shows me 1h more duration, this is not significant for me, but I wanted to try it out.

[wotus]

@dimitrios-kanellopoulos For both, I usually use an additional simple bike computer. But the plan for S9p is especially for daily recording of training data in all activities for the next 5200 units, as the old A3p has served me well since 2014. In this regard, the power saving modes sound very promising for me to try them out.

[Brad_Olwin]

@wotus For biking, the S9P should go 30+ Hours on Performance mode. However, you could go on Performance mode until you get a battery warning and then simply switch on the fly to Endurance mode. That way most or all of your bike would be on Performance mode.

[Mff73]

Other real world data about OHR.
My wife ran with S9P a couple of times, and it takes about 10 min to have a reliable value .

She has low HR at start (60) (S9P measure it while not recording) and she started the run, with warm up smoothly and in gentle downhill, so HR 150 for ten first minutes are not good (and by far).
And then, it becomes “normal”.

[chrisc92]

@mff73 I had the same problem and after tightening the wristband (thanks to dimitrios) the peak disapeared. But anyway for some days I keep my belt to compare and make sure that there is no “HR starting peak”, for the two first minutes I can have 10 to 20 more BPM.

[Dimitrios Kanellopoulos]

I am also having bad spo2 values but also from my oxymeter ( medical). But not when I am inside with the airco, and not at 40c. Just an observation. I don’t know if spo2 can relate to heat. I read and searched a bit and heat it is said to significantly impact the spo2. If I am correct. Not trying to justify something and I am putting some feedback to suunto