opens in new window PRESS RELEASE September 9, 2026 Introducing Apple Watch Series 12, with the all-new Health Sensing System Apple Watch Series 12 offers the most accurate heart rate sensing in a wearable, higher-frequency heart rate and HRV sensing, a readiness score, and Audio Intelligence features built with privacy at the core Apple Watch Series 12 delivers the most accurate heart rate sensing in a wearable, higher-frequency heart rate and heart rate variability sensing, and a readiness sco...