Samsung Galaxy Watch Ultra 2 Review: Best Rugged Android Smartwatch Made For Enthusiasts

Samsung made a loud statement with the first Galaxy Watch Ultra. That watch was tough but bulky, and it overheated during long GPS sessions. After a month with the Ultra 2, I can see the difference.

The Galaxy Watch Ultra 2 is a smart course correction. At $699 or ₹64,999, it’s not a radical redesign. It’s a focused upgrade. Samsung swapped in a 3nm Snapdragon chip, raised the display to 5,000 nits, and delivered multi-day battery life. Launched on July 10, this is Samsung’s most complete Wear OS watch yet.

Samsung finally nailed the basics. For most buyers, the main drawback is ecosystem lock-in. That’s easier to live with than the problems from the first Ultra, but it still won’t fit everyone.

For a month, I used my Galaxy Watch Ultra 2 every day, including sleep tracking overnight, outdoor runs in direct afternoon sun, and a submersion test to activate the water lock function. To verify my blood pressure readings, I compared them five times with an Omron medical-grade upper-arm monitor. I tested GPS lock speed and signal stability side by side against a Garmin Instinct Crossover worn on the other wrist during the same runs. I checked my body composition figures with a specialist smart scale, and I tested the Sound Exposure setting over a four-hour highway drive with the window down.

Samsung Galaxy Watch Ultra2 Review: Design & Build

The Ultra 2 is thinner, lighter, and finally comfortable for daily wear. It’s still a big watch. You’re stuck with Samsung’s strap system.

Samsung kept the cushion style, with a circular screen in an angular case made from aerospace-grade titanium. The chassis is now 12 percent thinner at 10.7 mm. Even with a bigger battery, it still weighs about 61.5 grams. This slimmer shape is a real improvement for daily wear. It sits closer to the wrist and moves less when I’m sprinting.

It still takes some getting used to wearing a 47mm sports watch to bed, even with the softer Marine Band. The new band is 26 percent lighter at 24 grams. Its flexible, perforated structure helps prevent sweat smell from getting trapped. The underside buttons make swapping straps easy.

Durability is one of its strong features, with 10 ATM water resistance, MIL-STD-810H certification, and an improved IP69K rating. When I tested it, I put the watch into a glass of water to activate the water lock function, and it worked perfectly afterwards. It is also the first time the watch has obtained EN13319 certification for dive instruments.

Samsung still uses its own band connector. Standard 20mm or 22mm straps won’t fit. That’s a strange choice at this price.

What Galaxy Watch band size should you choose, and why does it matter?

Getting your band size right matters for comfort and for sensor accuracy. The BioActive sensor needs to stay in contact with your skin. A loose fit affects readings more than most people realize.

• For wrist circumferences ranging from 130mm to 175mm (5.1 to 6.9 inches), choose Small/Medium (S/M).
• Medium/Large (M/L) suits wrist circumferences from 150mm to 215mm (5.9 to 8.5 inches).

Before you buy, wrap a soft tape measure around your wrist just below the wrist bone. Even with the Marine Band’s flexible design, starting with the right size helps the watch stay put during runs or swimming.

Samsung Galaxy Watch Ulta2 Review: Display

This is the brightest, most readable smartwatch display I’ve tested in harsh Indian sunlight. It’s a major strength, but not the only reason to buy this watch.

The 1.52-inch Super AMOLED display now hits 5,000 nits, much brighter than the original Ultra’s 3,000 nits and ahead of other premium smartwatches. In the afternoon sun, I never had to shield the screen with my hand. That’s a real upgrade.

The visual quality is sharp and vibrant thanks to the scratch-resistant sapphire crystal. My review unit stayed scratch-free after two weeks of normal use. The extra screen space lets you use detailed outdoor watch faces that switch to a low-brightness night mode. The 5,000-nit output also gives you a bright flashlight when you need it. It sounds like a gimmick until you’re reaching for your keys outside a dark building.

The touchscreen works well, even with damp fingers. With sweaty hands, I sometimes needed a second tap.

Samsung Galaxy Watch Ultra2 Review: Performance and Software

Switching to Snapdragon is the biggest quality-of-life upgrade here. I noticed the difference in every interaction, not just in benchmarks.

Samsung dropped its Exynos chips for Qualcomm’s Snapdragon Wear Elite, built on a 3nm process. The difference is obvious. Apps open fast. Samsung Health runs smoothly. The Play Store feels less sluggish than on other Wear OS watches I’ve used.

The watch stays cool, even during long GPS workouts. Older Galaxy Watches used to heat up on my wrist after a run. This one runs One UI 9 Watch on Wear OS 7, with a new interface. Samsung promises five major OS updates and five years of security patches. That’s the best in the business for a smartwatch.

Notifications are grouped by app. The Now Bar gives me a quick look at background tasks like workouts and timers. The new Raise to Talk gesture lets me call up Google Gemini just by lifting my wrist. No wake word needed. It’s handy when my hands are full, though it didn’t always work in noisy places like the gym. The double-pinch gesture still helps dismiss calls or scroll when my other hand is busy.

Samsung Galaxy Watch Ultra2 Review: App

Basic features work on any Android phone. For the best health tools, you’ll need a Samsung phone.

The Watch Ultra 2 works with any Android phone running Android 13 or later, but the experience varies depending on your phone. You pair it through the Galaxy Wearable app and view health data in Samsung Health. Core tracking works properly with any compatible Android phone.

Advanced clinical tools, such as ECG, blood pressure monitoring, irregular heart rhythm alerts, and sleep apnea detection, work only on Samsung Galaxy smartphones; the same applies to calendar notifications and the Reminder app. iPhone support isn’t available.

Google Maps, Google Wallet, Spotify, and YouTube Music all worked perfectly during my tests. I haven’t spent enough time using Samsung Wallet and NFC payments in India to judge their reliability, so I’ll hold off.

Samsung Galaxy Watch Ultra2 Review: Health and Fitness

This is one of the best health suites I’ve seen on a smartwatch. Many top features still come with strings attached. When it comes to GPS and running, the dual-frequency L1+L5 GPS stands out by acquiring a satellite signal in just a few seconds, which is noticeably quicker than the Garmin Instinct Crossover, and it maintains a very strong signal even when running through tree cover. Running Coach provides more advanced analytics.

However, high-performance runners will still lack native running power metrics, a feature that is standard on Garmin, Suunto, and Polar watches. You can save GPX routes into a workout to follow step by step, or save a previous run as a route to beat later, but you can’t create your own routes in the app like you can in Garmin Connect.

When diving, you enter the water and the watch automatically detects that you have submerged and starts its specialized diving profile, monitoring depth, water temperature, and dive length in real time. Samsung has worked with Mares to further develop this feature. The watch records the basics, but more advanced functions such as ascent and descent speeds and decompression limits will be available later this year via a companion app developed by Mares.

Blood pressure and ECG

To measure blood pressure, you first need to calibrate the sensor with a conventional cuff mounted on the upper arm, then recalibrate it every 28 days. The accuracy of the readings depends entirely on the calibration remaining valid. I carried out extensive testing against an Omron medical-grade machine. Once calibrated, it gave respectable results, matching the medical-grade device in two of five readings. Samsung itself states that the watch shouldn’t be used for clinical accuracy, and my testing confirms that caution.

For body composition, the BIA sensor transmits short electrical signals through the body using electrodes located in the Home and Back buttons. During my tests, the results were very close to those of a dedicated smart scale, with only a 0.6 percent difference in body fat—19.1 percent on the watch compared to 18.7 percent on the scale. Since consumer BIA devices have built-in margins of error, treat these figures as trends rather than absolute medical truths.

Samsung has offered an ECG feature on its watches for some time, and I have tested it extensively. Given that I have a heart patient at home, I also own an AliveCor KardiaMobile 6L medical-grade 6-lead ECG device for comparison. While the watch produced similar results, it lacks the pinpoint clinical accuracy that is required for medical diagnosis.

Sleep and recovery

The watch’s standout feature is its sleep tracking. The new Sleep Coaching program is a personal, AI-supported feature that takes place in three stages. In the first stage, an automatic evaluation over a seven-day period records the different sleep stages, heart rate, HRV, respiratory rate, movement, skin temperature, and SpO2.

In the second stage, Samsung Health assigns your sleeping style to one of eight Sleep Personas, for example something like a sensitive hedgehog or a relaxed walrus. In the third stage, a habit program that lasts between three and four weeks makes use of Galaxy AI to suggest small daily changes and keeps track of your progress with regard to those changes.

One thing annoyed me. Sleep readings come from the watch, but snore detection needs your phone next to your head, plugged in all night. That’s a lot of setup for something that should work out of the box.

The watch features Vitals, which monitors five heart-related metrics during the night to identify deviations from your baseline; Daily Cardio Load, which estimates the stress exercise places on your heart; and Vascular Load, which measures stress on the blood vessels and arterial stiffness.

A particularly notable new feature is Sound Exposure, which uses the built-in microphone to calculate the total amount of environmental noise over the day. It correctly identified a four-hour drive on the highway with the window down as unsafe, having recorded an average level of 77dB, which was more than 101 percent of the daily recommended limit. It’s the type of feature you only come to appreciate once it gently informs you of something true and slightly unsettling regarding your own commute.

If you forget to start a workout manually, for example, an outdoor walk or a game of pickleball, the watch will automatically detect the activity and start tracking it after around 10 minutes.

Samsung Galaxy Watch Ultra2 Review: Battery & Charging

This is the first Galaxy Watch Ultra that doesn’t give me daily charging anxiety. That alone makes it a much better watch.

Samsung bumped the battery up to 800mAh, a 35 percent jump from before. In real use, that’s impressive for Wear OS. With the always-on display, I got 48 to 50 hours, including sleep tracking and two hours of exercise a day. Turn off always-on and continuous vitals, and you’ll get 2.5 to 3 days. Even with LTE in Auto mode, I still got three days in my tests.

Fast charging finally arrives on a Galaxy Watch. I could get to 40 percent in about 30 minutes, which is perfect for a quick top-up before a run. A full charge still takes 1 hour and 45 minutes. Samsung sticks with its proprietary magnetic charger, so no Qi pads. Reverse Wireless PowerShare is gone because of the new rear sensor design.

Review Verdict: Should You Buy the Samsung Galaxy Watch Ultra2?

Smartprix ⭐ Rating: 8.2/10

The Galaxy Watch Ultra 2 shows what steady improvement looks like. It’s thinner, brighter, stays cool, and finally has battery life that ends daily charging worries. The Snapdragon Wear Elite chip makes it the fastest and most responsive Galaxy Watch I’ve used. The health tracking is among the best you can get without a subscription.

There are still compromises. No physical rotating bezel makes navigation less intuitive during sweaty workouts. Proprietary charging, missing running power metrics, and Samsung-locked health features all add up to a needless tax on an otherwise excellent watch.

At over Rs 60,000, this is a premium watch with a premium price. If you want alerts and step tracking, the regular Galaxy Watch is a better deal. For endurance athletes, divers, and anyone deep in Samsung’s world, the Ultra 2 doesn’t need hype. It’s the Android smartwatch to beat in 2026.

Last reviewed in September 2026.

FAQ

How can I select the correct band size for my Galaxy Watch Ultra 2?

Measure your wrist circumference: if it is between 130 and 175 mm, choose S/M; if it is between 150 and 215 mm, choose M/L. The right fit is important to ensure accurate sensor readings.

Does the Galaxy Watch Ultra 2 work with iPhones?

No, it is only compatible with Android phones that are running Android 13 or later.

Do I need a Samsung phone to use all the health features?

Although core tracking works with any phone running Android 13 or later, advanced clinical features such as ECG, blood pressure measurement, and sleep apnea detection work only on a Samsung Galaxy smartphone.

How accurate is the blood pressure monitor?

It must be calibrated with a traditional upper-arm cuff every 28 days. When I compared it with a medical-grade Omron device, it gave correct readings only two times out of five. Samsung itself makes it clear that the device should not be used for clinical purposes.

Can I charge it with a standard wireless charger?

No. It requires Samsung’s proprietary magnetic charging puck and does not support standard Qi pads or reverse Wireless PowerShare.

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