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Wrist heart rate monitor WHR inaccurate

Former Member over 6 years ago

Anyone else experienced issues with the heart rate inaccuracy? My FR945's HR reading is often higher than actual by 10%-30%. Usually when walking or moving around (e.g. cooking or talking & moving hands). It is disappointing because my $200 Fitbit tracks my heart rate accurately. This is a critical feature, because many other calculations depend on it.

Resetting the sensor (with garmin's support) did not fix it.

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0 alonglick over 5 years ago in reply to talsela

Tal,

Thanks a lot for this comparison.

From my POV - the results are embarrassing..... and totally shows what I feel and see while I use the watch day2day

0 kdx200 over 5 years ago

to me, as i said, is totally useless. i use it every day to do upstairs workout. When i reached the top floor the ohr read 102bpm.... the 920 with the chest strap read the real ones… 168bpm....

why the 920xt? because as i said the 945 firmware 4.40 kill the 3 straps (yes the 3 i have) connections so the 945 is only a *nice* watch. Waiting for a new fix for connection in the upcoming firmware.

0 talsela over 5 years ago

A 22 minute HIIT workout:

Gap %:

0 Former Member over 5 years ago in reply to Ralf_23

You They still don’t get the right numbers because the max HR for the day is different from the max HR on a run...

0 Former Member over 4 years ago

I have the same issues with 945. H.R is 30% more than usual. I have HuaweGT2 which works much better than this crap.

0 Former Member over 4 years ago

V4.40 firmware. I regularly get high HR warnings >130BPM on my F945 when sitting down resting. I measure my heart rate manually and with a second Welby OHR monitor on my finger. The Garmin shows 2x the actual heart measured by hand and in the Welby. Even if I remove the watch for a few minutes and reapply to my wrist the measured HR stays high. I have found that turning the watch off does reset the sensor and the readings align. For activities I generally use a HRM chest strap. As there is such a difference in the accuracy of the watch sensor and a chest strap I assume that the FIT file and Garmin Connect algorithms differentiate between the two when doing performance calculations?

0 Former Member over 4 years ago

I have only had my 945 for one week and for most part the HR seems really accurate. However, in the last couple of days I have had erratic HR whilst using my Tacx Turbo trainer (connected to iPhone) and just now the watch was reporting inflated HR of 100-130 whilst working at my desk. My resting HR is 50-55 and as stressful as work might be or with vigorous typing, my HR never exceeds 60 bpm. The problem persisted for 10 minutes until I turned my watch off and on again. After this is got back to normal. I'm willing to assume that because the watch is new and a fair bunch of firmware updates and maps were loaded that this may have introduced some gremlins, which the restart then sorted. I'll keep an eye on it and report back if necessary.

0 WrinkledTime over 4 years ago

Thought it was just me. I was just trying to contact Garmin - my hr has been insanely high all week

I dusted off my 935 and put it on and there's a huge difference - almost double

Spoke wiith support, a hard reboot on watch appears to have fixed things

0 thisIsMyUser over 4 years ago

I love replying to old posts. And my old 945 never appeared to have any relationship with reality for HR and my new one doesn’t either. 1,500’ of elevation gain in 45 minutes (regardless of the sport. Ha!) and it’s showing me 110? Nope. Has nothing to do with life. Grossly incorrect. Not helpful!

+1 Former Member over 4 years ago in reply to thisIsMyUser

Do you select "HIKE" mode during activity?

Try "WALK" or "RUN".

"HIKE" mode never shows HR more than 150bpm and after reaching 150bpm, it will drop to 110-120 no matter how hard your heart is beating!!!