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Has sleep detection accuracy improved?

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I can see that there were some "issues" with the accuracy of sleep detection years ago, so in the intervening time, has it been improved?

I've just started using a Vivoactive 4 for health monitoring, and so far it has failed to identify sleep correctly - when I'm awake, doing some seated activity it labels it as light sleep, and when I'm asleep, it labels it as active, the whole night.

Is this just "early days" behaviour, while the watch learns about me?

Is it ever going to get better?

And on a related note, I've set up continuous SPO2 measurement.  The results for the first night showed an oxygen saturation that would be a matter for concern, averaging 90%; while the daytime readings (far fewer, because I keep moving) have been typically 93% to 95%.  Can I read anything into these?  Again, are they on a learning curve and will they improve over time?   

  • 0

    I can't speak specifically to your issue, but in my experience with a couple of new Garmins over the years. They tend to suck and be wildly inconsistent, and then after three weeks or so the metrics stabilize and start to align more with my since of how things are going. Give it a little time and check back in. Good luck.

  • 0 in reply to chris_in_cal

    Hi Chris, and thanks for your comment.  Real world experience is generally best.  I shall do as you suggest, and see whether it improves with time.