Apple Watch Series 12 and Ultra 4 Unveiled With Major Health Upgrades

Apple has officially unveiled the Apple Watch Series 12 and Apple Watch Ultra 4, making health tracking and on-device intelligence the biggest themes of its latest wearable lineup. The new watches introduce upgraded heart-rate sensing, a new Readiness score, Apple Intelligence features, and improved workout capabilities. Both models are now available for preorder, with U.S. availability beginning September 18, 2026.

Quick Answer

The Apple Watch Series 12 starts at $399 in the U.S., while the Apple Watch Ultra 4 starts at $799. Both models feature Apple’s new Health Sensing System and S11 chip, bringing more frequent heart-rate and HRV measurements, Readiness insights, and new AI-powered features. Series 12 reaches up to 24 hours of normal battery life, while Ultra 4 extends battery life for demanding workouts.

What’s New With Apple Watch?

The biggest change is health monitoring. Apple Watch Series 12 can take background heart-rate readings every five seconds, while HRV measurements are captured more frequently. A new Readiness feature combines recent activity, training load, vitals, and sleep data into a 0–10 score designed to help users decide whether to recover, pace themselves, or push harder.

5 Key Developments

1. New Health Sensing System: Apple says Series 12 delivers its most accurate heart-rate sensing in a wearable.
2. Readiness Score: Health and fitness data are turned into a simple daily 0–10 readiness score.
3. Apple Intelligence: New Audio Intelligence features include Sound Recognition, Live Rewind, Siri Recap, and music recognition.
4. Better Workout Battery: Series 12 offers up to 10 hours during outdoor workouts, while Ultra 4 is designed for extended outdoor activity.
5. Ceramic Returns: Series 12 gets new ceramic finishes, including pearl white and night blue.

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When Does Apple Watch Series 12 Go on Sale?

Apple Watch Series 12 and Ultra 4 are available for preorder now, with retail availability starting Friday, September 18, 2026. Series 12 starts at $399 in the U.S.

What Happens Next?

The next major wave of interest will likely center on real-world battery performance, health-sensor accuracy, AI features, and comparisons with older Apple Watch models. Those factors will determine whether upgrading from an existing Apple Watch makes financial sense.

Final Take

The Apple Watch Series 12 and Ultra 4 mark a major shift toward more detailed health tracking and AI-assisted wearable features. For buyers focused on fitness, health insights, and smarter everyday interactions, the new lineup gives Apple Watch a stronger reason to upgrade.

 

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FAQs

1. When does Apple Watch Series 12 release?

Apple Watch Series 12 becomes available in stores on September 18, 2026.

2. How much does Apple Watch Series 12 cost?

The Apple Watch Series 12 starts at $399 in the U.S.

3. What is the Apple Watch Readiness score?

Readiness is a 0–10 score based on activity, training load, vitals, and sleep data.

4. What chip does Apple Watch Series 12 use?

Apple Watch Series 12 uses the new S11 chip.

5. Is Apple Watch Ultra 4 new?

Yes. Apple unveiled Apple Watch Ultra 4 alongside Series 12, with improved health sensing, fitness features, and longer battery life.