Samsung Galaxy Watch Ultra 2 review: Samsung’s best smartwatch yet

With the Galaxy Watch Ultra 2, Samsung is putting forward a compelling reason for tech companies not to rush a new version of their gadgets every year.

If the brand’s new smartwatch is anything to go by, skipping a year does mean the next iteration of the wearable can be significantly different, so much so that it might even entice people who own the previous version.

So what’s the fuss about? The new Galaxy Watch Ultra 2 received some big updates, including a thinner case, lighter strap, and larger battery, and it also has a much brighter screen than before – in fact, it’s probably the brightest of all smartwatch displays out there. The watch now uses a Qualcomm Snapdragon Wear Elite processor for buttery-smooth performance.

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Features have also been upgraded. The Galaxy Watch Ultra 2 can do turn-by-turn navigation like Garmin watches, track elevation, and provide hydration guidance based on estimated sweat loss. Plus, it now has dedicated diving support, courtesy of Mares. Best of all, the watch still looks pretty cool and performs even better.

Best smartwatch of 2026? Well, it’s not all sunshine and lollipops, but Samsung is certainly trying to better its hardware and software. Should you upgrade if you have an older Samsung watch, and is it worth jumping ecosystems if you have – let’s say – an Apple Watch Ultra 3? Let’s find out.

Samsung Galaxy Watch Ultra 2 review

Price and availability

The Galaxy Watch Ultra 2 was announced on 22 July 2026, the same day pre-orders for the watch opened. The wearables will go on sale on 7 August for the recommended price of £649. EU, US and AU prices and availability TBC. The watch comes in two colours, Titanium Silver and Titanium Grey.

For comparison, the Samsung Galaxy Watch Ultra retailed for £599/ $649.99/ AU$1,299 at launch, but can now be bought for as little as £400. The Apple Watch Ultra 3’s recommended retail price is $799 / £749 / AU$1,399 / €899, a fair amount higher than the Galaxy Watch Ultra 2.

The 44 mm version of the also brand new Galaxy Watch 9, which comes in either Graphite or Silver colour, sells for £349, while the smaller 40 mm version (colour options: Graphite and Cream) retails for £319.

Design and build quality

The Galaxy Watch Ultra 2 follows the original Ultra’s blueprint, retaining Samsung’s distinctive “cushion” design, which I like quite a lot. This combines an angular, rounded-square titanium case with a conventional circular display, allowing the screen to look like a traditional watch face while also giving the wearable a unique look.

Case

The 47 mm titanium case is said to be 12% thinner than before, despite the much larger 800mAh battery it houses. For context, the original Galaxy Watch Ultra measured 47.4 x 47.1 x 12.1mm and weighed 60.5g without its strap.

My Galaxy Watch Ultra 2 sample registered 61g on the scales, suggesting Samsung has reduced thickness without making the watch body itself significantly lighter.

I should add that my kitchen scales can’t measure 0.5 grams, so it’s entirely possible that the new watch is exactly the same weight.

(For the record, Samsung didn’t provide a spec sheet or feature list for the review. I will update it once I get hold of them.)

Strap

The new strap makes a more noticeable difference: it weighs 24g on my scales and is claimed to be 25% lighter than its predecessor. The material also feels genuinely softer and more pliable, helping the large watch sit more comfortably against the wrist.

Numerous perforations provide ample adjustment and should improve airflow during exercise, while Samsung’s Dynamic Lug System allows the strap sections to be released using buttons on the underside of the case.

Controls

The three-button layout is back, located at the right edge. It includes the circular Quick Button, distinguished by an orange surround, which provides immediate access to frequently used outdoor and exercise functions. The two flatter buttons above and below handle the usual Home and Back duties.

There is no mechanically rotating bezel, although the fixed bezel gives the display a useful degree of protection and supports Samsung’s touch-bezel navigation.

The numbered markings and orange index add to the watch’s technical, outdoorsy appearance. The bezel itself is touch-sensitive and can be used to navigate menus.

Display

The circular AMOLED display is protected by a sapphire crystal lens, but peak brightness has risen to a whopping 5,000 nits, which exceeds the original Ultra’s and the Apple Watch Ultra 3’s already impressive 3,000-nit maximum.

Other design details

Samsung positioned the original model as its toughest watch, equipping it with 10ATM and IP68 water resistance, MIL-STD-810H certification and an operating range of -20°C to 55°C.

The Ultra 2 is clearly cut from the same rugged cloth, although its final durability ratings will need to be confirmed once Samsung publishes the complete specification sheet.

Health tracking

The Galaxy Watch Ultra 2 carries over the extensive health toolkit of its predecessor, including continuous heart-rate monitoring, blood oxygen saturation, sleep and stress tracking, ECG readings, blood-pressure monitoring, and BIA-based body-composition analysis.

That is not necessarily a problem. Samsung Health is exceptionally polished, and both the phone app and watch interface present a considerable amount of information without becoming difficult to navigate. I particularly enjoyed the on-watch body-composition measurements, but sleep tracking was arguably the most impressive part of my testing.

Sleep tracking

I wore the Galaxy Watch Ultra 2 alongside the Oura Ring 5, my current benchmark for consumer sleep tracking. Neither can be considered as accurate as a clinical sleep study, but comparing their results provides a useful indication of consistency.

The two devices produced remarkably similar results. The sleep window difference was only 7 minutes, and the total sleep time difference was only 10 minutes (over nearly 9 hours).

The Galaxy Watch Ultra 2 detected 32 minutes of awake time, while Oura reported 33 minutes. Deep sleep differed by only five minutes, with Samsung recording one hour and 17 minutes and Oura measuring one hour and 22 minutes.

REM and light sleep showed larger differences, but since sleep stages are all guesswork across wearables, it certainly isn’t a deal-breaker. Sleep latency was 17 minutes according to Samsung and 10 minutes according to Oura.

Both measured an average sleeping heart rate of 48 bpm, while average blood oxygen saturation differed by a single percentage point: 96% on the Galaxy Watch and 97% on the Oura Ring.

That degree of agreement is excellent for two consumer wearables using different form factors and algorithms. It does not prove that either device correctly identified every sleep stage, but it gives me confidence in the Galaxy Watch’s estimates.

Samsung also provides plenty of depth. Alongside sleep duration and stages, the app shows movement, overnight blood oxygen saturation, skin temperature deviation, average heart rate, and respiratory rate.

It offers bedtime guidance, seven-day trends and sleep-consistency analysis, although its presentation is more clinical and less interpretive than Oura’s. The Ring does a better job of connecting sleep to concepts such as efficiency, restfulness, sleep debt, body-clock alignment and readiness.

Snore detection is available, but it relies on the paired phone being positioned near the bed and connected to a charger. That makes it considerably less seamless than the watch’s other overnight measurements.

Body composition tracking

The on-watch body-composition feature uses bioelectrical impedance analysis to estimate skeletal muscle mass, fat mass, body water, body fat percentage, BMI, and basal metabolic rate. To take a reading, you enter your weight and place two fingers against the watch’s buttons while keeping your arms away from your torso.

I compared its results with my Withings Body Comp smart scales. The measurements were taken two days apart, so changes in hydration, food intake and other variables prevent this from being a controlled comparison. Nevertheless, the directly comparable results were impressively close.

The Galaxy Watch estimated my body fat at 17.5%, compared with 18.1% from the Withings scales. Samsung calculated 14.2kg of fat mass (vs 14.6kg on the Withings) with a recorded weight of 80.8kg. A difference of 0.6% is reassuringly small.

Muscle figures cannot be compared directly because Samsung reports skeletal muscle mass, whereas Withings reports it as a percentage. Both devices are also consumer BIA products – not clinical body-composition scanners – so individual readings should be treated as estimates.

Sound exposure tracking

Sound Exposure is one of the genuinely new health additions. It uses the watch’s microphone to estimate cumulative exposure to environmental noise and shows how much of the recommended daily allowance has been consumed.

Samsung Health divides the result into OK, Caution, and Unsafe categories. It also displays the average sound level, periods above 80dB, and exposure trends over the previous seven days.

On one day, the watch recorded an average of 77dB and a cumulative exposure of 101%, which it says was “unsafe”. This was caused by the window of my car being down for approx 4 hours while driving on the motorways – the wind clearly made quite a racket in the car.

Samsung stresses that the figures are estimates affected by device use and fit, and that they are intended for general wellness rather than professional hearing assessment.

Other health features

Elsewhere, the Ultra 2 records heart rate variability, respiratory rate, skin temperature deviation, blood oxygen levels, and other overnight signals to establish a personal Vitals baseline.

Samsung Health also provides Heart Health and Vascular Load scores, the latter of which compares overnight cardiovascular strain against the user’s baseline.

ECG, blood pressure, irregular heart rhythm notifications, sleep apnoea detection, stress monitoring, AGEs Index, and menstrual cycle predictions complete one of the most extensive health suites available on a smartwatch.

Health feature gripes

There are some familiar frustrations. As mentioned above, snore detection only works when the paired phone is positioned near the bed and connected to its charger. Certain regulated health functions also require a SIM card so Samsung Health Monitor can establish which country the device is being used in.

Samsung also talks extensively about AI, but its broader health ecosystem still lacks some tools found in other apps. Food logging from a photograph, for example, would make nutrition tracking much less of a hassle.

Also, while the software is polished, there is bloatware everywhere on the phone that’s required for all the watch functions to operate properly, which I could live without.

Fitness tracking

The Galaxy Watch Ultra 2 supports more than 100 exercise types, ranging from everyday walking and strength sessions to multisport events, open-water swimming and trail running. Outdoor tracking is backed by dual-frequency L1 and L5 GPS, with support for GPS, Galileo, Glonass and BeiDou satellite systems, plus onboard elevation and compass sensors.

Samsung says the new Snapdragon Wear Elite processor improves positioning accuracy and efficiency, particularly in challenging environments such as cities, forests and mountains. The watch also offers personalised heart-rate zones, VO₂ max estimates, cardio-load analysis and automatic exercise recognition.

It is a comprehensive package, although the depth of its training analysis remains closer to a premium general-purpose smartwatch than a dedicated Garmin or Coros sports watch.

Automatic exercise recognition

Automatic exercise recognition also works impressively well. The watch can detect walks and less conventional activities after approximately 10 minutes. (It even recorded half an hour of morning housework as exercise, estimating that I had burned around 200 calories.) Running detection is faster, taking roughly four minutes to recognise that a session has begun.

It’s worth noting that auto-logged outdoor workouts, such as walks, don’t trigger the GPS, so if you want to record your route, you’d best start the Galaxy Watch Ultra 2 manually.

Samsung’s algorithms can nevertheless be demanding. Despite completing 16,000 steps on one particularly active day, the watch informed me that my cardio load was insufficient. General movement contributes to daily activity, but the system still expects vigorous exercise before awarding a favourable cardio-load score. Is the watch trying to kill me?

I appreciate that the WHO recommends daily moderate-to-vigorous exercise, but surely the algorithm could just determine that multiple walks and 10k+ steps a day are fine? Oh, well.

Trail running

The new trail-running profile records duration, distance, calories, speed, pace, elevation, gradient and heart rate. It covers the fundamentals, but it is not nearly as detailed as the trail-running tools found on comparable Garmin watches.

Samsung is positioning the Galaxy Watch Ultra 2 as a serious adventure watch, yet its data and analysis still align more closely with those of a mainstream smartwatch.

Sweat-loss estimation is interesting, although “estimation” is the operative word. The figure is not generated in real time, either, and you have to run for at least 20 minutes and burn 90 calories before the watch produces a result.

Following a hot 45-minute trail run, it estimated that I had lost almost one litre of fluid and recommended drinking 1.5 litres to replenish it. That is potentially useful guidance, but it feels almost too hardcore for the relatively basic analysis surrounding it.

GPX and turn-by-turn navigation

I have not yet tested GPX imports or turn-by-turn navigation, although completed routes can be exported from Samsung Health as GPX files. It is also worth remembering that GPX route guidance and elevation information were already available on the original Galaxy Watch Ultra.

Diving

I was unable to test the Galaxy Watch Ultra 2’s new diving functionality, but it represents one of the watch’s most significant adventure-focused upgrades. Samsung says the dedicated diving app launches automatically when the watch enters the water and records real-time depth, dive duration and water temperature.

A separate app developed with diving-equipment specialist Mares is due later this year, adding more advanced guidance such as descent speed, recommended time at a given depth and safe-ascent information intended to reduce the risk of decompression sickness.

Battery life and charging

The Galaxy Watch Ultra 2 has an 800mAh battery, representing a substantial 35% capacity increase over the original Ultra’s 590mAh cell. In my testing, however, the larger battery did not produce an equally dramatic increase in real-world endurance.

Starting from 100%, the watch reached 11% after 57 hours and 10 minutes. This period included a 45-minute trail run, a 42-minute GPS-tracked walk, a manually tracked 20-minute circuit workout and almost two hours of automatically detected walking, housework and other activity.

Based on these results, I estimate a total battery life of approximately 64 hours, or just over two and a half days, with the always-on display enabled. That just about exceeds Samsung’s 60-hour claim for the original Galaxy Watch Ultra under the same display setting.

My testing also included more than three and a half hours of recorded activity, including two GPS workouts, making the result particularly encouraging. The improvement is nowhere near the 35% increase in battery capacity, but the Ultra 2 appears capable of lasting longer than its predecessor under demanding mixed use.

Charging

Charging performance is adequate rather than particularly fast. Starting at 12%, the watch reached 62% after 35 minutes and 100% after 70 minutes. It was initially estimated that the process would take 1 hour and 21 minutes, with an average charging input of around 5W.

More testing is required to see how the watch fares without the always-on screen, and without GPS workouts logged during the discharge period. Also, Samsung hasn’t provided me with specifications, so I don’t know how my results compare with the official numbers.

Verdict

The Samsung Galaxy Watch Ultra 2 is a superb flagship smartwatch and a meaningful hardware upgrade over its predecessor.

Its dazzling 5,000-nit display, smoother performance, more comfortable strap and larger battery all improve the everyday experience, while sleep and body-composition tracking performed impressively against my Oura Ring 5 and Withings scales.

Samsung Health remains one of the most comprehensive and polished wearable platforms available. New additions such as Sound Exposure, trail running and automatic diving support broaden its appeal, although its training analysis and navigation tools still lack the depth offered by comparable Garmin and Coros watches.

The £649 price is also hard to ignore, especially since the original Galaxy Watch Ultra can now be found for considerably less. If you have one and it’s still functional, you might not need to rush the upgrade unless the brighter display, improved battery life, or diving features are especially appealing.

For anyone with an older Galaxy Watch who wants Samsung’s best wearable, however, the Ultra 2 is the obvious choice. It is not quite the ultimate outdoor watch Samsung wants it to be, but it may be the most complete Android smartwatch of its generation.