Apple announced the Apple Watch Series 12 and Apple Watch Ultra 4 powered by the new S11 chip. The devices feature an upgraded Health Sensing System with increased frequency for heart rate and heart rate variability (HRV) measurements. Apple claims this system delivers the most accurate heart rate sensing available in a wearable.
A new readiness feature analyzes activity, vitals, and sleep data to generate a daily score. This software addition directly competes with health tracking offerings from Whoop and Oura.
The watches introduce Audio Intelligence features arriving later this year. Live Rewind will transcribe recent conversations while Siri Recap provides summaries. Apple processes all Audio Intelligence data locally to maintain user privacy.