Apple’s rugged smartwatch keeps its familiar design and $799 price, but a larger battery, improved sensors and readiness insights make the Ultra 4 a stronger upgrade for new buyers than existing owners.
Apple’s latest rugged smartwatch is, in essence, a refinement rather than a rethink. The Watch Ultra 4 keeps the familiar 49mm titanium shell, 3,000-nit display and 100-metre water resistance, but Apple has focused on what happens underneath the case. According to Apple’s announcement, the new model brings an S11 chip, an overhauled health sensing system and a larger battery, while preserving the same starting price of $799 and the usual cellular-only approach for the Ultra line. That makes it a more convincing upgrade for first-time buyers than for owners of the previous generation.
Battery life is the most obvious practical gain. Apple says the Ultra 4 can last up to 50 hours in normal use, rise to 84 hours in Low Power Mode, and deliver up to 25 hours of full-GPS workout tracking, with a separate Max Extended Workout mode that stretches outdoor sessions to 45 hours. In testing reported by TechRadar, the watch comfortably surpassed two days with the always-on display and overnight sleep tracking enabled, while Apple also claims a 15-minute charge can add up to 18 hours of use. That combination of longer runtime and quicker top-ups addresses one of the main pain points for serious smartwatch users.
The bigger story, however, is health tracking. Apple’s redesigned sensor array is intended to improve heart-rate capture and electrocardiogram readings, while also enabling more frequent background measurements and new recovery metrics. TechRadar said the most useful addition was Readiness Score, which combines recent activity, sleep and vital signs into a single daily rating without requiring a separate subscription. The Guardian’s review likewise noted that the Ultra 4’s upgraded sensors support more detailed recovery data, even though some features are still due later in the year. That gives Apple a clearer answer to competing wearables that have long offered readiness-style scoring as a paid extra or, in some cases, as a native feature.
Performance appears to have gained polish rather than raw speed. Apple’s S11 chip is said to improve responsiveness throughout watchOS 27, while TechRadar reported that apps open quickly and the interface feels consistently fluid. The review also found heart-rate readings to be closely aligned with an external monitor and other premium wearables, which supports Apple’s claim that the new sensing hardware is doing more than cosmetic work. Smaller additions, including real-time step-count complications and wrist-based Siri features, are useful quality-of-life improvements, though some of the more ambitious AI functions are still pending.
For most buyers, the Ultra 4 is best understood as a mature product becoming more capable, not more dramatic. It remains a watch for endurance athletes, outdoor users and Apple customers who want the company’s most rugged model, but the lack of a visual overhaul means Ultra 3 owners are unlikely to feel compelled to upgrade immediately. Even so, the cleaner battery story, more useful health summaries and faster everyday behaviour make this the strongest version of Apple’s adventure watch so far.
Disclaimer: This content is intended for informational purposes only. Readers are advised to exercise their own judgement, conduct due diligence, or consult a qualified expert before acting on any information provided.
