First Night With an O2Ring: What to Expect

Q: What should you do before bed?

Charge it. Give it a full charge the first time, so the battery doesn't cut the night short. Install ViHealth and pair the ring. Do this while you're awake, not at midnight. The app also sets the ring's clock, so your nights get the right date. Pick a finger. Many people start with the thumb. If it's loose there, try another finger. It should be snug but not tight. More on fit in O2Ring sizing. Decide on the vibration. The ring can buzz when your oxygen drops below a level you set. Not sure whether you want that? Read should you turn on the vibration alert. Then put it on and go to sleep.

Q: What if the numbers look odd?

Check the recording before you check the result. Gaps or flat stretches? The ring probably moved. See why your O2Ring data has gaps. One sharp spike down with nothing around it? That's often movement, not you. Short recording? The ring may have come off, or the battery ran out. A single night is all over the place anyway. Alcohol, a cold, a late meal and your sleeping position all move the numbers.

How to set up an O2Ring for its first night, what the morning report will look like, and why you shouldn't read much into one recording.

PulseOxTracker Team7 October 2026

Your O2Ring has arrived and you want to wear it tonight. Here's what to do before bed, and what you'll wake up to.

What should you do before bed?

Charge it. Give it a full charge the first time, so the battery doesn't cut the night short.
Install ViHealth and pair the ring. Do this while you're awake, not at midnight. The app also sets the ring's clock, so your nights get the right date.
Pick a finger. Many people start with the thumb. If it's loose there, try another finger. It should be snug but not tight. More on fit in O2Ring sizing.
Decide on the vibration. The ring can buzz when your oxygen drops below a level you set. Not sure whether you want that? Read should you turn on the vibration alert.

Then put it on and go to sleep. The ring starts recording on its own once it's on your finger. You don't need your phone nearby overnight.

What will the first night feel like?

You'll probably notice it. Most people stop noticing after a few nights.

You might also sleep a bit differently because you know you're being recorded. That's one reason not to read much into night one.

What do you do in the morning?

Take the ring off and wait for the recording to end.
Open ViHealth and let it sync.
Put the ring back on the charger.

You'll get a chart and a handful of numbers. How to read your O2Ring report explains each one.

What if the numbers look odd?

Check the recording before you check the result.

Gaps or flat stretches? The ring probably moved. See why your O2Ring data has gaps.
One sharp spike down with nothing around it? That's often movement, not you.
Short recording? The ring may have come off, or the battery ran out.

A single night is all over the place anyway. Alcohol, a cold, a late meal and your sleeping position all move the numbers.

So what's next?

Wear it for a week of ordinary nights before you change anything. That week is your baseline. How many nights to record covers why.

Remember the ring isn't a sleep study. If you snore loudly, someone has heard you stop breathing or gasp, or you're exhausted during the day, see a doctor. Don't wait for more data.

ViHealth shows you one night at a time. If you want your weeks on one chart, PulseOxTracker can sync the ring over Bluetooth or import your ViHealth CSV files.

Not a medical device. Does not diagnose, treat or prevent any condition. Discuss results and changes with a clinician.