Apple has officially launched sleep apnea notifications for Apple Watch users in mainland China, following regulatory approval from the National Medical Products Administration as a Class II medical device, MacRumors reported. The feature rolled out via over-the-air system updates on October 14, requiring users to install iOS 27.0.2 and watchOS 27.0.1.
The monitoring tool relies on the watch’s built-in accelerometer to track subtle wrist movements associated with interruptions in normal breathing patterns. Apple World Today noted that the system translates these movements into a metric called breathing disturbances, which users can view as “up” or “not up” within the Health app on an iPhone or iPad. BigGo Finance reported that users must wear the watch for at least 10 nights within a 30-day assessment window for the algorithm to evaluate sleep data.
Supported Apple Watch Models and Setup Requirements in China
The sleep apnea notification feature is available on a range of hardware beyond the newest flagship devices. According to 36Kr, supported hardware includes the Apple Watch Series 9 and newer, the Apple Watch Ultra 2 and newer, and the Apple Watch SE 3. KuCoin noted the feature is intended for adult users aged 18 and older who have not previously received a formal medical diagnosis of sleep apnea.
To activate the capability, users must confirm that “Track Sleep with Apple Watch” is enabled inside the iOS Health app. BigGo Finance detailed that users then go to the Health Checklist or browse to the Respiratory section to complete the setup guide, which asks for their date of birth and previous diagnosis history.
Deep learning trains detection algorithm on clinical sleep datasets
Apple developed the detection algorithm using deep learning trained on clinical-level sleep apnea test datasets, according to Apple World Today. Reference devices during clinical validation included hospital-based polysomnography and home sleep apnea tests, utilizing a strict criterion of a 4% drop in blood oxygen to minimize false positives, as reported by KuCoin.
The Apple Watch does not function as a real-time alarm and will not vibrate to wake a user when a breathing pause occurs. BigGo Finance explained that if at least half of the valid monitoring nights within the 30-day cycle show elevated breathing disturbances, the watch issues a notification indicating potential signs of moderate to severe sleep apnea.
Apple Watch Sleep Apnea Notifications Launch in China https://t.co/Pe36tit8Fe pic.twitter.com/Npu69Z2Oed
Users export PDF reports to discuss treatment with physicians
Users who receive an alert can export a PDF report through the Health app containing three months of respiratory disturbance data, notification details, and educational materials. Apple World Today stated that this documentation serves as a reference for patients to discuss potential diagnosis and treatment with their physicians.
Untreated sleep conditions carry severe health implications. KuCoin cited clinical data indicating that approximately 80% of treatment-resistant hypertension is associated with sleep apnea, while the risk of coronary heart disease increases fivefold, and 60% to 90% of stroke patients live with the condition.
Frequently Asked Questions About Apple Watch Sleep Apnea Detection
Which regulatory body approved the feature in China?
The feature received approval from China’s National Medical Products Administration as a Class II medical device, entering the market under the mobile sleep apnea symptom prompting software registration.
Do users need consecutive nights of sleep tracking for an evaluation?
No, users do not need consecutive nights; they must wear the Apple Watch for at least 10 nights within a 30-day assessment window for the system to generate an evaluation.
Can the watch vibrate to alert users during an actual apnea event?
The Apple Watch does not act as a real-time alarm and will not vibrate during a breathing pause, operating instead as a long-term observer that reviews data every 30 days.
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