Tips to maximize features on Apple Watch Series 12 and Ultra 4

Apple Watch Series 12 and Ultra 4 add new health-monitoring capabilities and software features that require specific setup steps to be fully utilized. Users can add exclusive complications such as live heart-rate, step count and the readiness score to any watch face, providing continuous health insight. The devices also support automatic music identification; enabling Music Detection in Settings → Smart Stack allows the watch to display song titles and artists without invoking Siri.

The Siri Modular watch face, available on watchOS 27, offers additional styling options and can incorporate the new complications. To obtain accurate readiness scores, Apple recommends completing health details, configuring Activity and overnight vitals, enabling Sleep tracking and wearing the watch while sleeping for at least seven nights, as well as finding a daily charging window. The Vitals app now shows daytime measurements derived from heart-rate and heart-rate variability, while overnight data includes respiratory rate and wrist temperature. Future updates are expected to add Siri Recap and Live Rewind functionalities.