Apple Watch Ultra 4 Review: The Series 12 Is Closing the Gap

Apple's Apple Watch Ultra 4 has remained largely unchanged since its 2022 launch, retaining its large titanium frame and robust emergency features. Over the years, the Ultra series has seen minor enhancements, and this year's release is no exception. Upon testing both the Ultra 4 and the newly released Series 12, the reviewer found that the two watches share many similarities, with the gap between them narrowing each year.

Consequently, the Ultra 4 appears to be a more specialized smartwatch, albeit a less appealing one for the average user. The Series 12 now boasts many of the Ultra 4's health and safety capabilities, while the Ultra's biggest selling points—its multiday battery, dedicated Action button, and satellite messaging—are more suited to those venturing outside cellular coverage.

For those primarily focused on tracking health, workouts, and daily tasks, the Series 12 offers the same core experience at a significantly lower price point of $400. Current Ultra owners may find little reason to upgrade to the Ultra 4. Despite no changes in price or finishes, the Ultra 4 now incorporates the Health Sensing System and Health app upgrades found in the Series 12.

These new features include a faster S11 chip, improved heart rate sensors, and enhanced tracking of heart rate variability (HRV). The Ultra 4 can now provide more comprehensive data on recovery and stress recovery, along with a new Readiness feature that generates a daily score (0-10) based on activity, sleep, and vital signs. The Watch also receives Audio Intelligence features such as Live Rewind and Siri Recap later in the year.

While the Ultra 4 boasts a 50-hour battery life, compared to 42 hours for the Ultra 3, the Series 12 still leads in price and overall versatility. The reviewer appreciates the physical Action button and the more durable feel of the Ultra 4, but finds the large 49-mm titanium case somewhat impractical. The touchscreen controls can be frustrating, especially during physical activity.

Overall, the Ultra 4's specialized features make it a strong choice for outdoor enthusiasts and endurance athletes, but for those seeking a more versatile and affordable smartwatch, the Series 12 remains a strong contender.