
- Following an 18-month ban, Blood Oxygen tracking is coming back to the Apple Watch Series 9, Series 10, and Ultra 2
- It's not an entirely on-device experience anymore, though
- The Apple Watch still measures Blood Oxygen, but the iPhone will calculate and display the final result
It’s been a long 18 months, but Apple’s announced that Blood Oxygen tracking and monitoring are returning to the Apple Watch Series 9, Series 10, and Ultra 2 in the United States.