Two instinct solar watches stopped measuring heart rate exactly at the same time

Do the two of you have the altimeter set to calibrate not during activity? This is a one time calibration your watch will do during your sleep window if connected to your phone. I've read other post where people have this setting turned on, but for one reason or another, they didn't have a Bluetooth connection with their phone. Still shouldn't affect your heart rate, but there's a pattern with this happening with several users that have watches with this function.  I'm certain our favorite forum minion will soon chime in and tell us it's a defective buckle on the strap though. :) 

3225031 said:

Both hers and mine stopped measuring heart rate in the period of 1:28 AM - 2:28 AM exactly the same for both of us.

Yes, that's strange. Perhaps Former Member is right, although I did not see yet any such issue reported with Instinct or Instinct Solar. Certainly worth of testing.

What is rather common at Instinct is freezing of the watch (the time stops running on the screen, and it stops recording too), but that's usually resolved only by pressing a button, not going away alone after an hour. And it would be strange if it happened on both devices exactly at the same time. Wasn't there a change of the daylight saing time in your region that night? Don't you happen to sync both watches to the same phone, by hazard?

Would be interesting to know whether also other data stopped recording during that hour on both devices simultaneously - check out also the graphs for stress, sleep (incl. the Movement option!), body battery, and even steps, to see whethere there was any activity recorded during the critical time.

There was a timechaoge but it was two weeks ago.

Everything else is measured except the heart rate therefor the sleep also.

What is also interesting we have only few minutes difference between our REM sleeps mine was 3h:36m hers 3h:33m

Maybe we had some paranormal activity in our bedroom who knows :) 

Both watches are synced to different phones so there is no chance of data overlaps.

Now everything is working as expected without any issues, but its really strange what happened in that hour between 1:28 AM and 2:28 AM :) 

I just checked and yes its turned on on both watches. But still strange it happened in the exact same timeframe :)

3225031 said:

Everything else is measured except the heart rate therefor the sleep also.

Well, except of steps and sleep movements, everything else is based on the HR too, so nothing should be recorded if the HRM did not work. And at steps during the night, you have to look really close, and use the mouseover tootlip to see whether there was any change at all, and often there is indeed none, or just a few steps detected.

So are you sure everyhting else continued to record? And if so, then what exactly?

.. btw, do you both use the PulseOx feature at night? Was there any data from it, during the critical period?

I'm not sure how it selects the window, but looking at my 4 hr altimeter graph mine takes place about 3 AM.  I was out of town overnight a little while back and forgot to bring my phone charger.  I turned off my phone to save battery for the following day and I had a 1 hr gap between 2:30 and 3:30.  Others have noticed this too, but I don't think many correlate the two as many don't understand how calibrate not during activity works.  You can test it this evening.  One of you can turn off your phone and the other can have it turned on and in range.  I suspect the one without the connection will show the gap again. 

Sorry I mislead you, in that period nothing is recorded, no sleep data no stress data nothing. and NO the PulseOX at night is switched off.

Okay that sounds interesting, I will disconnect my phone from the watch tonight and will test it out.

Some have theorized that the watch is looking for the Bluetooth connection and when it's not finding it, it's shutting down the other sensors to dedicate more power for Bluetooth.  I don't know, it may just be a coincidence but other's have said they noticed this when the feature is enabled and the phone was out of range for that evening.  Make sure the watch's Bluetooth is turned on and it's the phone that is disconnected.  It'll be interesting to hear your findings.