Apple Watch Series 12 and Ultra 4 debut with faster S11 chip and Siri AI upgrades

hardware.slashdot.org

Apple unveiled the Apple Watch Series 12 and Ultra 4 at its September hardware event, featuring the faster S11 chip and enhanced Siri AI capabilities. The new watches retain prior designs but add watchOS 27, a redesigned Health app with Longevity metrics like Health Age, and a 32-electrode sensing system for continuous heart-rate tracking every five seconds. Series 12 keeps 24-hour battery life with faster charging, while Ultra 4 offers 50 hours. WatchOS 27 adds AI-suggested apps, one-handed gestures, and Siri Recap for real-time transcription.


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