Blood oxygen level measures how much oxygen is in red blood cells, which is an indicator of overall respiratory health. The new sensor shines red and infrared light onto a wearer’s wrist and measures …
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The iPHONE NEWS
Blood oxygen level measures how much oxygen is in red blood cells, which is an indicator of overall respiratory health. The new sensor shines red and infrared light onto a wearer’s wrist and measures …
( read original story …)