Blood oxygen sensing is finally rolling out on the Oura Ring

Oura’s adding two new metrics that make use of its SpO2 sensors: average blood oxygen and breathing regularity. | Image: Oura

SpO2 sensors, which enable blood oxygen monitoring, were one of the marquee upgrades when Oura announced its third-generation smart ring. The only catch was that, even though the new Oura Ring had the necessary hardware, the feature itself was still in the works. Now, roughly nine months after launch, Oura says blood oxygen sensing will finally start rolling out to users this week.

Blood oxygen metrics have become increasingly popular when it comes to sleep tracking. It generally works by shining a red LED onto your skin. The amount of light that’s then reflected back is used to estimate how much oxygen is in your blood. The feature works similarly on the Oura Ring Gen 3, which uses a combination of red and infrared LED sensors. But…

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