Apple introduced Apple Watch Series 12 in Cupertino, delivering a re-architected Health Sensing System and the new S11 chip. The watch provides higher-frequency heart rate and heart rate variability measurements, which Apple says power a new readiness score and more accurate heart-rate sensing; a study of over 1,000 participants comparing devices found Apple Watch achieved the highest accuracy. Series 12 also surfaces Audio Intelligence features coming later this year to help users recall key moments from conversations and stay alert to important sounds, with privacy and accessibility protections Apple highlighted. A redesigned Health app for iPhone will arrive later this year, adding a Longevity tab and a Health Age metric showing how metrics track relative to a user’s age. watchOS 27 brings Apple Intelligence powered Siri on Apple Watch, and the S11 chip is described as Apple’s most powerful wearable chip. Series 12 is offered in aluminum, titanium, and ceramic finishes, aluminum models gain Ceramic Shield 2 which Apple says is 60 percent tougher than previous aluminum Ion-X glass, and preorders open today with availability beginning Friday, September 18.
