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Apple Watch Series 12 & Ultra 4: Smarter Siri, Deeper Health Insights
9 Sep
Summary
- New Apple Watches feature enhanced Siri for app actions and online info.
- Heart rate monitoring is now continuous with 5-second intervals.
- watchOS 27 brings dynamic app grids and new gesture controls.

Apple unveiled the Apple Watch Series 12 and Ultra 4, showcasing advancements in health tracking and Siri functionality. These new models feature an updated health sensor capable of collecting heart rate data every 5 seconds, providing continuous monitoring throughout the day.
The Series 12 and Ultra 4 run on watchOS 27, which will also be available for existing compatible Apple Watch users. This software update introduces a more intelligent Siri, powered by Apple Intelligence, enabling it to execute actions within supported applications and reference online information.
watchOS 27 also brings a dynamic app grid that suggests apps based on Siri AI and offers new gesture controls for navigating widgets and notifications. A wrist-flick gesture allows for quick actions like dismissing notifications and silencing timers.