Apple Watch Ultra 4 Review: The Upgrade You Might Not Need

Sarah Johnson · 2026-10-05

Apple’s Ultra line has always been the go-to smartwatch for endurance athletes and outdoor enthusiasts. But it’s also become the watch that gets the best of what Apple has to offer—whether that’s fitness tracking, communication features, or just lasting the longest. With the Apple Watch Ultra 4, Apple isn’t reinventing the wheel. Instead, it’s doubling down on reliability and usefulness, aiming to track your health and fitness stats at a more granular level. It’s also making Siri smarter, and it’s going to keep you away from the charger for longer. But all that comes at a cost—roughly the price of two Apple Watch Series 12 models. So, is the Ultra 4 a worthy upgrade over the Ultra 3? Here’s what I found. ### Design and Screen The Apple Watch Ultra 4 is basically identical to the Ultra 3. It has the same 49mm grade 5 titanium case, the same thickness, the same physical buttons, and the same strap options. There’s a tad more weight, but it’s so negligible you won’t notice it day-to-day. Many will be happy Apple hasn’t messed with a winning formula. I was sort of hoping for a built-in flashlight, but that hasn’t happened. It remains a chunky smartwatch, but that’s part of its rugged charm. The display is still bright and easy to read, even in direct sunlight. If you were hoping for a redesign, you’ll be disappointed. But if you love the current look, you’ll feel right at home. ### Battery Life That Goes the Distance One of the biggest improvements is battery life. The Ultra 4 can last up to 50 hours with regular use. That’s a full two days and then some. For anyone who’s ever been caught with a dead watch mid-run or during a long hike, this is a game-changer. It means you can track a weekend adventure without packing a charger. And for everyday users, it means fewer worries about topping up. ### Smarter Audio with S11 Under the hood, the new S11 chip powers Audio Intelligence. This adds automatic sound recognition and Shazam integration, so your watch can identify songs and ambient noises. Features like Live Rewind and Siri Recap are coming later, but even now, it’s a taste of what’s to come. It’s not a must-have yet, but it’s nice to know the hardware is future-proofed. ### Health Sensing Gets an Upgrade The new health sensing system is the real star here. Higher-frequency heart-rate sampling powers new Readiness scores, HRV recovery insights, and separate daytime/nighttime Vitals views. In plain English: the watch now gives you a clearer picture of how ready you are to tackle the day, how well you’re recovering, and how your body responds to stress. It’s like having a mini health coach on your wrist. > The Ultra 4 isn’t about flashy new features—it’s about making the ones you rely on every day work better. ### The Verdict So, should you spend nearly $950 (about £749 converted to USD) on the Ultra 4? If you’re coming from an Ultra 3, the answer is probably no—unless you really need the extra battery life and health insights. But if you’re new to the Ultra line or upgrading from an older model, the Ultra 4 is a solid, reliable choice. It’s not a revolution, but it’s a refinement. And sometimes, that’s exactly what you need.