Quick Summary
The sleep apnea detection feature for the Apple Watch has passed regulatory approval and is available in watchOS 11.
You'll need a Series 9, Series 10 or Ultra 2 to benefit from it.
The Apple Watch Series 10 was expected to launch without a key feature – sleep apnea detection. That's because the feature required regulatory approval in some countries, particularly the US, and couldn't be launched without Apple getting the regulatory go-ahead.
