Apple Watch Series 12 Feature Roundup: New Chip, Band Sensor, Longer Battery Life Confirmed for September

With the Apple Watch Series 12 expected at Apple's September event, MacRumors has consolidated every confirmed and rumored feature into a single roundup. Here's the complete picture of what's coming — and what might not make the cut.

Confirmed: New Chip

Leaked Apple code revealed a new chip for the Series 12. While it's unclear whether Apple will brand it S11 or S12, performance improvements are expected after Apple skipped a chip upgrade with Series 11. The new chip should bring faster app launches, smoother animations, and improved machine learning for health features.

Rumored: Health Sensor in the Band

The most intriguing rumor comes from leaker Kosutami, who claims the Series 12 will embed at least one health sensor directly in the silicone band. If true, this would be a first for Apple Watch and could enable blood pressure monitoring or more accurate skin temperature readings. MacRumors rates this rumor as "sketchy" — treat it with caution.

Expected: Better Battery Life

A Weibo leaker known for accurate Apple predictions says Apple is focused on longer battery life for the Series 12. The Series 11 already delivers all-day battery with about 20% remaining at bedtime; the Series 12 could push into comfortable two-day territory.

Possible: Touch ID

Internal Apple software code leaked last year referenced Touch ID for Apple Watch, and the feature could debut on both the Series 12 and Ultra 4. This would enable secure payments and app unlocks without an iPhone nearby.

Confirmed: Same Design

Multiple sources agree the Series 12 will retain the Series 10/11 design language. No redesign until 2028 at the earliest.

What This Means for Buyers

The Apple Watch Series 11 is currently $299 — $100 off — at the Best Buy Black Friday in July sale. If you want a new chip and longer battery, wait for September. If you want the best value right now, $299 for the Series 11 is excellent — the Series 12 will launch at $399+ and won't see deals for months. See our full buy-now-or-wait analysis and compare all smartwatches in our smartwatch guide.