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

How Does the Ultra 4 Improve Emergency Response?

Apple has released the fourth generation of its rugged smartwatch, the Apple Watch Ultra 4, featuring enhanced health tracking sensors and improved battery life compared to previous models. The device maintains the titanium casing and large display introduced in 2022, targeting users who need durability for extreme conditions. While core design remains unchanged, internal upgrades focus on making the watch more capable for everyday health monitoring and outdoor activities.

The Ultra 4 includes updated sensors that provide more accurate readings for heart rate, blood oxygen, and temperature tracking, building on the health-focused advancements seen in the standard Series 12 lineup. Apple has also optimized power efficiency, extending battery life to up to 36 hours on a single charge under typical use, a notable improvement over the Ultra 3’s 30-hour rating. These changes aim to bridge the functionality gap between the Ultra line and Apple’s mainstream smartwatch offerings, which have gained ground in health metrics and software features.

The watch retains signature safety features like dual-frequency GPS, a louder siren, and improved crash detection, now calibrated to respond faster in remote environments. Apple claims the updated algorithms reduce false alerts while improving accuracy during activities like hiking or skiing. These enhancements are particularly valuable for users in areas with limited cellular coverage, where reliable emergency signaling can be critical.

Can the Ultra 4 Replace a Standard Apple Watch for Daily Use?

Despite its bulk, the Ultra 4 runs the same watchOS as the Series 12, offering access to the same apps, widgets, and customizable faces. The larger screen improves readability for notifications and maps, though the size may feel cumbersome for smaller wrists. For users prioritizing battery life and ruggedness over subtlety, the Ultra 4 presents a compelling option, though its premium price remains a barrier for casual buyers.

The continued evolution of the Ultra series suggests Apple is refining its approach to niche markets, balancing extreme durability with broader appeal. As health tracking becomes more sophisticated across all models, the distinction between professional-grade and consumer smartwatches may continue to narrow, potentially reshaping how users choose their wearable technology.

Frequently Asked Questions

What is the battery life of the Apple Watch Ultra 4? Apple states the Ultra 4 lasts up to 36 hours on a single charge with mixed use, extending to 60 hours in low-power mode.

Does the Ultra 4 include new health sensors? It features updated versions of existing sensors for heart rate, blood oxygen, and wrist temperature, with improved accuracy and faster sampling rates.

Is the Apple Watch Ultra 4 compatible with Android phones? No, the Apple Watch Ultra 4 requires an i Phone 8 or later running iOS 17 or higher for full functionality.