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Apple Watch Series 12 introduced with new Health Sensing System

techSep 9, 202664264

Apple introduced Apple Watch Series 12 alongside Apple Watch Ultra 4, unveiling a re-architected Health Sensing System and the new S11 chip. Series 12 delivers higher-frequency heart rate and heart rate variability measurements that power a new daily readiness score and other health and fitness features. Apple said a study of more than 1,000 diverse participants found Series 12 produced the highest heart-rate accuracy versus leading wearables. A redesigned Health app coming later this year adds a Longevity tab with a Health Age metric, and the S11 also enables new Audio Intelligence features for Live Rewind and sound alerts while keeping privacy and accessibility central. watchOS 27 brings Apple Intelligence to Siri on the wrist for personal context and broader world knowledge. Series 12 is available to pre-order today with shipping beginning Friday, September 18, and comes in new aluminum, titanium, and ceramic finishes including a Ceramic Shield 2 on aluminum models.

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