Apple announced two new Watches Tuesday–one with the latest and greatest features, the $399 Apple Watch Series 6, and one with a nice price, the $279 Apple Watch SE.
The Series 6 adds a new sensor that reads blood oxygen saturation, or SpO2, which represents the percentage of oxygen being carried by red blood cells from the lungs to the rest of the body and indicates how well this oxygenated blood is being delivered throughout the body. The new sensor shines infrared light through the skin and into the bloodstream and infers the oxygen levels from the color of the blood, Apple said.
The new blood oxygen readings add another metric to the new sleep tracking features in WatchOS 7. The Watch can take periodic blood oxygen readings during the night, then add the readings to the Health app on the Apple Watch, Apple chief operating officer Jeff Williams said. The blood oxygen readings also add a view to the performance of the heart and lungs when the wearer is working out.
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Source : fastcompany.com
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