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Apple Watch Series 12: Familiar Design, Different Everywhere Else

  • On Wednesday, Apple unveiled the Apple Watch Series 12 and Apple Watch Ultra 4 during its September hardware event, featuring expanded health tracking and enhanced Siri AI capabilities.
  • CEO John Ternus, who replaced Tim Cook on September 1, brings direct experience overseeing previous Apple Watch development as head of hardware engineering.
  • The Health Sensing System captures heart rate data every 5 seconds—60 times more frequently than before—while Siri AI-powered Audio Intelligence adds Sound Recognition, "Live Rewind," and Siri Recap note-taking.
  • Powered by the S11 chip enabling on-device Apple Intelligence, both watches deliver over 2 days of battery life or 45 hours with Max Extended mode; the Series 12 starts at $399 and Ultra 4 at $799, with preorders opening today for September 18 launch.
  • The Series 12 measures 9.7mm thick as Apple's slimmest smartwatch, while both watches add a Readiness feature analyzing activity and sleep data viewable in the redesigned Health app with Apple Intelligence summaries.
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The new Health Sensing System promises more reliable heart readings and Readiness helps decide when to train or recover.

·Los Angeles, United States
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AppleInsider broke the news on Monday, September 7, 2026.
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