Topline Apple’s Series 6 Watch will be able to monitor blood oxygen levels—and the company will partner with researchers to see if the sensor can pick up on early signs of the coronavirus. Apple says the Series 6 watch can provide blood oxygen level readings in 15 seconds. Screenshot Key Facts 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 the amount of light reflected back, which can determine blood oxygen levels in 15 seconds, Apple says. The watch will be able ...read more...