Smartwatches put to the test: can they match medical oxygen monitors?
NCT ID NCT05789563
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compared blood oxygen readings from three different smartwatch models against a standard medical pulse oximeter. Eighteen healthy adults breathed low-oxygen mixtures to simulate hypoxia while wearing a smartwatch and a reference oximeter. The goal was to see how well the smartwatches agree with the medical device.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- What this could lead to
- If the smartwatches prove accurate, they could become a reliable tool for people to monitor their blood oxygen levels at home.
- What could go wrong
- This was a small study with only 18 healthy participants, so results may not apply to people with health conditions or in real-world settings.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Czech Technical University in Prague
Kladno, 27201, Czechia
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