The Apple Watch Series 12 is now available for pre-order, offering significant upgrades over the Series 11. It retains the same starting price of $399 and a similar design, but introduces a new S11 chip and doubles the RAM to 4GB. A major advancement is the enhanced "Health Sensing System" with more accurate heart rate tracking and HRV measurements. New health features exclusive to the Series 12 include a Readiness app and a daytime vitals view.The Series 12 also boasts improved Audio Intelligence features like Live Rewind and Siri Recap, processed securely on the new chip. While everyday battery life remains consistent, charging for workouts and normal use has been improved. New case material options include ceramic, and updated color choices are available for aluminum and titanium models.The display area is slightly reduced on the Series 12, leading to thicker bezels, despite a minor increase in case dimensions and weight. For new buyers, the Series 12 is the clear choice due to its advanced features and capabilities at the same price. Existing Series 11 owners might consider upgrading for specific health tracking, audio, or ceramic case features. Owners of Series 9 or older models will find more compelling reasons to upgrade to the Series 12.