Apple Watch Series 12

Apple Watch Series 12 features a Health Sensing System powered by the S11 chip, providing continuous heart-rate readings every five seconds and high-frequency HRV data that generate a readiness score and a Longevity tab in the Health app. It adds Audio Intelligence for conversation recall and sound alerts, runs watchOS 27 with Siri AI, and is offered in aluminum, titanium, and ceramic cases with Ceramic Shield 2 glass, available for pre-order now and releasing on September 18.