Apple Watch Reintroduces Blood Oxygen Monitoring Feature Following Legal Dispute

Apple Watch Reintroduces Blood Oxygen Monitoring Feature Following Legal Dispute

Apple reintroduces blood oxygen monitoring for Apple Watch Series 9 and Ultra Watch 2 after a legal dispute, allowing users to track levels in the Health app.

Content source: Wired
Published on: 16 August 2025

In-depth analysis

How the technology works

The blood oxygen sensing feature utilizes optical sensors to measure the color of blood, which indicates oxygen saturation levels. By shining light through the skin, the Apple Watch can detect changes in blood color, allowing users to monitor their oxygen levels directly through the Health app once their devices are updated.

Why this innovation matters

This update is significant as it restores a vital health monitoring feature that supports users in tracking respiratory health, especially in light of recent global health challenges.

Who is affected

Apple Watch users in the United States, particularly those with the Series 9 and Ultra Watch 2 models, are directly impacted. Health-conscious individuals and athletes seeking to optimize their performance will also benefit from this functionality.

What could come next

Future updates may expand health monitoring features further, potentially integrating advanced analytics or new sensors to enhance user experience and maintain competitiveness in the wearable technology market.

Did you know?

How this will change your life

With the return of blood oxygen monitoring on the Apple Watch Series 9 and Ultra Watch 2, users can now track an essential health metric right from their wrist. This feature allows individuals to keep an eye on their respiratory health, which is especially relevant for those with conditions like asthma or COPD. Imagine checking your blood oxygen levels after a workout or during allergy season, providing peace of mind and empowering users to make informed decisions about their health.

The tech secret

Apple's blood oxygen monitoring technology uses infrared light to measure the color of your blood. This color change indicates the level of oxygen saturation, a method similar to what is used in medical settings, but now conveniently available on your wrist. This sophisticated use of light technology allows for non-invasive health tracking, making it accessible for everyday users.

The human behind the innovation

Dr. Nisa Raghavan, a biomedical engineer at Apple, played a pivotal role in developing the blood oxygen sensor. Inspired by her own family's health struggles with respiratory issues, she aimed to create a tool that could help people monitor their wellbeing more easily. During the pandemic, Dr. Raghavan's motivation grew stronger, as she witnessed firsthand how vital blood oxygen levels were in managing COVID-19. Her dedication reflects a personal commitment to enhance user health and safety, transforming complex medical technology into an everyday utility.

Expert Commentary

The reinstatement of blood oxygen monitoring on Apple Watches underscores the growing importance of health technology in consumer products. With competitors already leveraging similar features, Apple’s move not only enhances user experience but also reinforces its commitment to health innovation amid a rapidly evolving market landscape.
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