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9to5Mac reports Apple Watch Series 12 and Ultra 4 announced at today's Apple event with upgraded health tracking; pre-event details align with Bloomberg and MacRumors coverage.

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Home/Tech/Apple Watch Series 12 and Ultra 4 debut with upgraded health tracking
VERIFIEDBy Xavier Rivera·Wednesday, September 9, 2026 at 1:59 PM AST·1.5 min read

Apple Watch Series 12 and Ultra 4 debut with upgraded health tracking

Apple has announced the Apple Watch Series 12 and Ultra 4 featuring an upgraded health tracking system that measures heart rate every five seconds and adds a new readiness score. The models also introduce Audio Intelligence with sound recognition, live rewind transcription, and Siri recaps while running on the new S11 chip (previously reported to include A20 Pro-derived components).

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Apple Watch Series 12 and Ultra 4 debut with upgraded health tracking
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TL;DRAI · 60 sec read

Apple announces the Series 12 and Ultra 4 watches with a heart rate monitor that measures every five seconds and heart rate variability every five minutes. A new readiness score combines activity, vitals and sleep data while Audio Intelligence adds sound recognition and transcription. The S11 chip and new finishes support these health and audio upgrades.

⚐ CORRECTEDThursday, September 10, 2026 at 6:37 PM EDT

Moved ceramic case colors (pearl white / night blue) from Ultra 4 to Series 12; clarified Ultra 4 remains titanium-only with up to 50-hour battery.

→ All corrections
Apple has announced the Apple Watch Series 12 and Apple Watch Ultra 4 at its special event today, with both models built around an upgraded health tracking system.

The new models share an upgraded heart rate monitor as the centerpiece of their health sensing system. The monitor now measures heart rate data every five seconds. That represents a 60x frequency increase over previous models.
The new models share an upgraded heart rate monitor as the centerpiece of their health sensing system.
Apple is also measuring heart rate variability every five minutes. The company calls the new system the most accurate heart rate sensor in a wearable.

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A new readiness feature draws on activity, vitals, and sleep data. Readiness provides users with an overall assessment based on those three inputs. The feature is available on both the Series 12 and Ultra 4.
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Audio Intelligence adds sound recognition and live transcription capabilities. The system can recognize sounds such as doorbells. A live rewind function lets users go back 15 seconds to transcribe recent speech by double-clicking the Digital Crown, a gesture that previously triggered multitasking.
Audio Intelligence adds sound recognition and live transcription capabilities.
Siri recaps can summarize meetings and other content when enabled, relying on audio notes. Both models also gain a new Siri Modular watch face tied to the intelligence features.

The watches are powered by Apple's new S11 chip, previously reported to include A20 Pro-derived CPU, GPU, and Neural Engine components, and come in new material and color options. Series 12 aluminum finishes are offered in space gray, black, light gold, and bronze, while titanium versions appear in radiant gold and natural. Ceramic Shield 2 protects the display.
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Ultra 4 includes a larger battery that delivers up to 50 hours (over two days) of battery life and remains titanium-only (natural and black), with Hermes models adding gold to the lineup. Ceramic cases in pearl white and night blue return on Apple Watch Series 12.
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