Apple Watch Series 12 vs Series 11: Here’s everything new
9to5mac.com Sep 12, 2026

Apple Watch Series 12 vs Series 11: Here’s everything new

AI-summarised brief · reviewed before publication

Apple Watch Series 12 launches with 42 mm and 46 mm case sizes as its predecessor but adds a Dark Bronze aluminum finish and a new Ceramic option in Pearl White and Night Blue. The aluminum models feature Ceramic Shield 2 glass, offering greater durability, while the case is larger, creating thicker bezels. Under the hood, Series 12 introduces the S11 processor and doubles RAM to 4 GB, a major performance bump since the S9 chip in 2023. Apple also unveils a revamped Health Sensing System and “Audio Intelligence” features, including the Readiness app that scores fitness capacity on a 0‑10 scale. Battery charging is faster, delivering 10 hours of workout time—25 % more than Series 11—and Precision L1 GPS improves location accuracy. It ships on September 18 for $399.

💡 Why It Matters

  • · The Readiness score turns the watch into a real‑time coach, letting users adjust activity before they start, a capability previously unavailable on any consumer wearable.
  • · By embedding AI‑driven health analytics, Apple pushes wearables toward proactive wellness management.