Some health capabilities, such as ECG and irregular heart rate notifications, have been limited in availability due to regulatory requirements, but it appears that those requirements do not apply to a blood oxygen monitoring facility.
According to the Apple Watch Feature Availability page, blood oxygen monitoring is available in more than 100 countries, suggesting that there are no health-related regulatory issues that Apple has to address. A support document on using blood oxygen monitoring mentions that it is only available “in some countries and territories”, so there may be some omissions.
Those who are particularly interested in purchasing the Apple Watch Series 6 for the feature should double-check the availability page to ensure blood oxygen monitoring in their country.
With the Apple Watch Series 6, blood oxygen measuring is done through the new Blood Oxygen App. It uses red and green LEDs to measure the amount of light reflected by the skin and an array of infrared light, with advanced algorithms using this data to calculate the color of the blood to obtain oxygen levels by the blood. Uses the series. Bright red blood contains more oxygen, while dark red blood has less.
The Apple Watch Series 6 is available to purchase from Apple’s online store, with orders starting this Friday.