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    blood oxygen Apple Watch explained

    An iPhone displays blood oxygen level data in a health app, while an Apple Watch next to it shows a blood oxygen measurement screen with swirling graphics and a 15-second timer. Apple logo is in the lower right corner.

    Watch Oxygen Accuracy: How Apple Watch Measures Blood Oxygen and What Affects Reliability

    March 9, 2026 / 8:10 AM

    Watch Oxygen Accuracy depends on sensor design, light absorption algorithms, and environmental factors that influence how Apple Watch calculates blood oxygen levels.

    Cover of Apple Magazine, issue #764, dated June 19, 2026. The main focus is a large “27” icon in the center, with headlines about Tesla support, retro digital cameras, and new operating systems and AI integration.
    AppleMagazine App - Subscribe and Save | Image promoting AppleMagazine subscription. Text reads: "Subscribe and save. For a limited time only." Below, overlapping blue and multicolored app icons bearing the "AppleMagazine" logo are displayed. "AppleMagazine" is shown above an "App Store" download button. White background.

    A tablet, smartphone, and laptop display the same image of a smiling person in a large hat and beige outfit, set against a blue gradient background with the Apple logo in the corner—highlighting seamless iCloud syncing across devices.

    mDNSResponder Fixes Reveal Apple’s Hidden Network Layer

    A woman in a wheelchair sits at a wooden desk with a tablet, a small potted plant, and an iPhone with Eye Tracking features, facing forward against a plain white background.

    iPhone Eye Tracking Makes Hands-Free Navigation Possible

    Three Fortnite characters stand confidently before a large, purple Apple logo on a black background, blending iconic Fortnite style with the App Store branding for a striking crossover image.

    Fortnite’s Return Escalates App Store Fight

    A humanoid robot with a sleek black faceplate and textured light gray body, featuring a geometric logo on its chest and minimalist, futuristic design—an embodiment of Apple robotics and physical AI innovation.

    Figure AI Could Be Apple’s Robotics Shortcut

    Close-up of a smartphone using Live Activities in the Apple Sports app to display the FIFA World Cup 2026 schedule, highlighting group stage matches for the United States, Paraguay, Australia, and Turkey. A blurred soccer field and players fill the background.

    Apple Sports Expands Before World Cup 2026

    The word "Gemini" with a colorful star logo appears over a blurred close-up of a smartphone camera, hinting at Gemini on iPhone, with a faint Apple logo in the bottom right corner.

    Gemini on iPhone Shows Google’s Apple Strategy

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