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.
Disclaimer
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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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
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Locations
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Czech Technical University in Prague
Kladno, 27201, Czechia