The Apple Watch Series 12 and Apple Watch Ultra 4 bring new health sensors, an S11 chip, and detailed recovery insights. Both share the Health Sensing System, Readiness, Recovery HRV, hypertension notifications, sleep apnea notifications, and Sleep Score. The Ultra 4's higher price does not buy more advanced everyday health tracking.

The Series 12 starts at $399, while the Ultra 4 starts at $799. A titanium Series 12 starts at $699, and a ceramic option starts at $899—more expensive than the Ultra despite a smaller size and shorter battery life.

The Ultra 4 focuses on durability, extended battery life, and activities like diving and exploration. Differences include design, case materials, display brightness, battery, and water resistance. Our guide helps you decide which Apple Watch is best for you.