It's been a hectic release cycle for Apple's wearables, with the heart-rate monitoring AirPods Pro 3, the Apple Watch Series 11 and Apple Watch SE 3 all dropping at once. However, we're here to talk about Apple's flagship fitness powerhouse: the Apple Watch Ultra 3.
It’s finally a proper upgrade for the most rugged, go-anywhere, climb-every-mountain Apple Watch. In 2024, it got a slight spec bump and a fresh paint job, but for 2025 Apple’s really rounding out the Ultra 3 in a way that makes it a compelling upgrade for folks with the first or second generation Ultra, especially the former.
The Apple Watch Ultra 3 has been tested extensively, both at Apple Park and beyond the environs of the launch event. TechRadar’s Senior Fitness & Wearables Editor Matt Evans and US Managing Editor for News, Jacob Krol, have pulled double-duty on this review, testing it to develop a complete picture of how the Apple Watch Ultra 3 operates as a daily driver. Spoiler alert: it's great.
Apple Watch Ultra 3: Price and availability
- $799 in US
- £749 in UK
- AU$1,399
The Apple Watch Ultra 3 is available for $799 / £749 / AU$1,399. This is the same price as its predecessor in most regions, although the Ultra 3 is slightly cheaper in the UK – the Apple Watch Ultra 2 cost £799 in the UK, so the Ultra 3 is better value there.
It's the most expensive Apple Watch, and 5G comes as standard, with no option to downgrade unlike other models. Whether it's good value entirely depends: if you're a casual exerciser or gym-goer looking to stretch your budget, this is more watch than you'll need and we'd advise you to get the Series 11 or SE 3.
If you're an outdoor enthusiast looking for a top-flight watch with a longer battery life, this is a terrific option.
- Value score: 4/5
Apple Watch Ultra 3: Design
- Same 49mm case as Ultra 2
- Slightly larger screen
- Recycled Natural or Black Titanium finishes
In the same way that Apple is sticking with the rounded 'squircle' look of previous iterations for its Series 11 smartwatch, it’s clear that the Apple Watch Ultra 3 rocks its tried-and-tested design here. It still offers a supersized 49-millimeter display in a thicker, more durable titanium body.
The Ultra 3 comes in Natural Titanium or Black Titanium, and I’ve (Jake) been testing the latter, which looks especially sleek. You can pair it with a custom-match Ultra Milanese Loop – a personal favorite band of mine – with one of the new 2025 options, like the Trail Loop, which now features reflective material on the edges, or with older bands that fit the 49mm / 46mm / 44mm sizes.
One change Apple made here is using a 3D printing process to build the case from recycled titanium, though you won’t notice any difference in appearance. The display, however, is seriously improved. Like the Series 11 – and the Series 10 before it – the Ultra 3 now boasts an always-on Retina OLED display with an LTPO3 panel, giving it finer control over the refresh rate for additional smoothness in motion. This shines with watch faces like the new Flow, Waypoint, or Exactograph.
It also enables wide-angle viewing, so even when glancing to the side you have a better chance of reading what’s on the display – I’ve found this especially helpful when checking notifications with my arm extended or in low brightness. Apple has also slimmed down the bezels by 24% all around. While noticeable when comparing the Ultra 3 to the Ultra 2 side by side, it’s most apparent when viewing maps – like hiking trails – or photos on the 49mm display.
The Ultra 3’s display can flex its brightness from as high as 3,000 nits in peak sunlight to as low as 1 nit in darkness. Much of the interface uses the Liquid Glass design language introduced in watchOS 26; and even though it looks snappy, it’s also plenty fast for handling actions thanks to the S10 chip inside.
It still charges with the same magnetic puck included in the box, but now supports faster charging.
- Design score: 5/5
Apple Watch Ultra 3: Features
- Emergency SOS instructions intuitive
- Satellite connectivity genuinely useful
- I'm loving the new Sleep Score software update
Satellite connectivity for communication makes a lot of sense on a device that you’re likely to be wearing into areas without cell service, and the Apple Watch Ultra 3 is the first Apple Watch to support satellite connectivity.
The headline feature Apple announced at its September launch event was Emergency SOS via Satellite, and while I hope you never need it, we have used the demo version available on the watch. Much like the iPhone’s satellite connectivity, it walks you through the process of sending an alert: identifying the issue, guiding you on how to point your wrist for a satellite connection, packaging the info, sending it into orbit, and beaming a response back down.
In the demo, you trigger SOS on the Ultra 3 by dialing 911, 999 or your country's emergency code. Once it realized there was no grid connection, it began sending an emergency text via satellite. The watch guided us through a questionnaire – we selected “lost or trapped,” confirmed it was just us, and noted no active injuries. This is especially handy if you’re lost on a trail. As a final step, you can also notify emergency contacts.
The watch then instructed us to move our wrist left until it locked onto a satellite. At that point, it packaged the watch’s location, questionnaire details, and the linked medical ID. A relay center receives this data and can send messages back down.
This was, of course, a demo, but it shows how impressively the system works. Notably, it can sometimes transmit data without you moving your wrist, which could be helpful if it’s triggered as a backup during crash or fall detection.
Emergency SOS via Satellite is available for free for two years in the United States – though Apple has a history of extending that – and in the UK and Australia, it’s also free, along with the additional Find My features, which also operate via satellite. I was able to test Find My myself, but in the US, Find My and Messages require an active cellular plan.
With Find My, you can send a basic message (with a character limit) via satellite and even update your Find My location. You’ll go through the same process of moving your Ultra 3 into the right path of a satellite as it passes overhead. With Find My, you’ll know the location was updated this way via a satellite icon on the map next to the person.
Satellite connectivity is a genuinely useful addition to the Ultra 3, and I’m keen to test the Messages and Find My functions more. Beyond this, the Ultra 3 also gets a number of new features as part of watchOS 26, including the Liquid Glass interface, new apps like Notes, and a new Wrist Flick gesture.
Just like the Series 11 and SE 3 – as well as some older models that can run watchOS 26 – the Ultra 3 also gets the new Sleep Score. This builds upon the watch’s ability to track sleep and detail time spent in each stage but now quantifies it with a score from 0 to 100. I’m really enjoying this feature so far, and it feels like it’s about time it arrived here.
The Ultra 3 also adds Hypertension Notifications, meaning that on a rolling 30-day basis, the watch can alert you to potential hypertension (high blood pressure) and recommends you see a doctor for a full diagnosis. This feature is FDA-approved for use in the US.
While the Apple Watch Ultra 3 is technically getting an upgrade to the S10 chip, it’s mostly a repackaged version of the S9 chip found in the Ultra 2. The good news is that the Ultra 3 still feels just as responsive as the other new Apple Watches and competing smartwatches on the market. I think you’d be hard-pressed to slow it down.
This is paired with a new 5G antenna and redesigned antenna band visible around the outer lip of the watch. Apple says it’s more efficient than the previous onboard antenna, and can use two bands at once when needed to improve reception.
Apple also redesigned the internals of the Ultra 3, and thanks to that, there’s a bigger battery inside. Apple rates the Ultra 3 for up to 42 hours with normal use.
- Features score: 4/5
Apple Watch Ultra 3: Performance
- Battery life better than described
- Very accurate heart rate
- New Sleep Score is nice to have
Matt here! The Apple Watch Ultra 3 performs as well as the Apple Watch Ultra 2 did during extended testing: it’s simply good to use on a day-to-day basis. The screen is easily brightened, and at max intensity it makes other watches with otherwise-bright AMOLED screens seem dull. Sorry, Garmin Venu 4, you just don’t quite cut it here.
Speaking of, now I’ve had the opportunity to test the Apple Watch Ultra 3’s fitness credentials, I’m happy to say they pass muster. I tested it against an industry-standard heart rate monitor, the Polar H10, during a 20-minute stationary cycle and a 45-minute run, also comparing the GPS readings from the latter against a Garmin watch.
The Ultra 3 is successful in all respects, especially during heart rate monitoring. During both tests, the Ultra 3’s heart rate readings cleaved very closely to the Polar H10, with only 1bpm difference in the ‘average heart rate’ metric and very similar-looking graphs. I’ve not yet tested it underwater, but given that we had a diver conduct a test with the Apple Watch Ultra 2 and rated it fine for recreational dives, I’d be very surprised if anything changed here.
The Sleep Score being added to Apple Watches was long overdue, and it’s nice to see more contextual information available on the Apple Health app. The feature is really supported by the Ultra 3’s longer battery life, which during testing, allowed me to leap out of bed and into the day without needing to charge the watch at all. Apple’s battery life claims of 42 hours are accurate even with normal use, including a 45-minute run. With careful use and low-power mode, it’ll easily last several days.
I’ve not had to test the emergency satellite communication for real, but the demo features as described above work a treat. Really, it’s been a great experience, as you’d expect: I’ve loaded the watch up with my favorite third-party apps (Strava, Audible, Spotify, AllTrails, all the usual suspects) and it’s just a really solid daily driver with accurate metrics and a longer-than-ever battery life. If you’re looking to really push the watch’s capabilities, the extreme sports functionalities are there if you need them.
- Performance score: 5/5
Apple Watch Ultra 3: Scorecard
Category | Comment | Score |
Value | The most expensive Apple Watch, and more than most will need. | 4/5 |
Design | Utilitarian and functional, with the best display in smartwatches. | 5/5 |
Features | Great, but not a huge amount to separate it from the Ultra 2. | 4/5 |
Performance | Taken on its own merits, outstanding in every respect. | 5/5 |
Apple Watch Ultra 3: Should I buy?
Buy it if...
You want the best Apple Watch
This is the top of the range, bar none, so if money is no object the Ultra 3 is the one to get.
You’re an extreme sports fan
Want satellite messaging in the wilderness, or a working dive computer without paying for a specialist device? The Ultra 3 has you covered.
You want more battery life
The Apple Watch Ultra 3 packs almost double the battery life of the Apple Watch Series 11, and more than the Ultra 2.
Don't buy it if...
You’re a casual exerciser
For most runners, hikers or gym bunnies, this is more watch than you’ll ever need.
You’re not intending to add to a data plan
The Apple Watch Ultra 3 is 5G capable by default, and you’re paying for the extra infrastructure.
You don’t use an Apple phone
It sounds obvious, but if you’re not already using or intending to switch to iPhone with this purchase, you may as well get a Garmin or Samsung Galaxy Ultra.
Also consider
Garmin Fenix 8
The best system-agnostic adventure watch you can buy.
Read our full Garmin Fenix 8 review
Apple Watch Ultra 3: How we tested
Both Jacob and Matt, who share credit on this review, tested the Apple Watch Ultra 3 during and after its launch period. We wore it constantly, draining the battery down and charging it back up, and Matt performed fitness tests against a Polar H10 heart rate monitor and other smartwatches. We loaded the watches with third-party apps, tested its demo satellite navigation feature, and wore it to bed to determine Sleep Scores.
First reviewed: September 2025
