Apple Watch Ultra 4 Review: Elevating the Adventure Wearable

Introduction

Apple's ultimate adventure timepiece has returned with the Apple Watch Ultra 4. While it maintains the familiar aesthetic of its predecessor, the internal upgrades elevate it to a new standard of performance for athletes and power users alike. During a rigorous 22-mile testing run, we examined whether these changes truly justify the $799 price point.

Design and Display

Externally, the Apple Watch Ultra 4 remains consistent with the Ultra 3, featuring a 49mm titanium case, 100-meter water resistance, and a vibrant 3,000-nit OLED display. While the design is unchanged, the watch now offers new color options for its signature bands, including translucent silicone Ocean Bands and fresh hues for the Alpine and Trail loops.

Advanced Health and Fitness Tracking

The centerpiece of the Ultra 4 is its redesigned heart rate sensor system. Boasting a '32-petal' configuration—a significant jump from the previous two-petal design—this sensor provides superior accuracy for heart rate and HRV monitoring. The S11 processor enables continuous sampling, allowing users to track vital statistics in real-time, even outside of dedicated workout modes. The introduction of a daily 'Readiness Score' provides a comprehensive look at recovery, pulling data from sleep metrics and training load to guide your daily intensity.

Audio Intelligence and Siri

A notable software inclusion is the suite of Audio Intelligence features arriving later this year. 'Live Rewind' offers a 15-second recap of ambient conversations, aimed at aiding auditory processing, while 'Siri Recap' generates itemized summaries of the day based on ambient recording. Apple has emphasized that these features are optional, privacy-focused, and automatically disabled out of the box.

Battery Life

The Ultra 4 makes strides in longevity, now offering up to 50 hours of battery life in smartwatch mode (up from 42 hours). For dedicated athletes, the watch provides 25 hours of continuous GPS and heart rate tracking, with an extended mode pushing that limit to 45 hours, ensuring it holds up during the most demanding endurance events.

The Verdict: Should You Buy?

The Apple Watch Ultra 4 is undeniably the most advanced endurance wearable Apple has produced. While the physical design remains static, the improvements in sensor accuracy, battery performance, and software-driven intelligence make it a compelling choice for serious athletes. If you already own an Ultra 3, the upgrade may be incremental, but for anyone on older hardware, the combination of the S11 chip and upgraded health metrics represents a significant leap forward.