The New Apple Watch Measures Your Blood Oxygen. Now What? - The New York Times
Should You Trust Apple's New Blood Oxygen Sensor? - IEEE Spectrum
Track Your SpO2 to Uncover Changes in Your Wellbeing - Fitbit Blog
SpO2 and pulse ox wearables: Why wearables are tracking blood oxygen - Wareable
Smartwatches Have Measured Blood Oxygen for Years. But Is This Useful? - CNET
Apple Watch 6's blood oxygen sensor is unreliable and misleading - The Washington Post
Smartwatches Have Measured Blood Oxygen for Years. But Is This Useful? - CNET
Amazon.com: Popglory Smart Watch, Smartwatch with Blood Pressure, Blood Oxygen Monitor, Fitness Tracker with Heart Rate Monitor, Full Touch Fitness Watch for Android & iOS for Men Women : Electronics
Study finds flaws in Apple Watch SpO2 sensor accuracy