Samsungは新しいスマートウォッチ「Galaxy Watch Ultra2」と「Galaxy Watch9」を2026年7月22日に発表しました。AIを搭載した健康管理機能により、複雑な生体認証データをユーザーの健康のあらゆる側面におけるパーソナライズされた実用的なガイダンスに変換することができます。

2026 WEARABLES TESTED IN AUSTRALIA SamsungSmartwatch ## Samsung Galaxy Watch Ultra2 Slimmer, brighter and easier to wear overnight than the original, held back by a two-hour charge and Android-only support. Display 1.5″ Super AMOLED, 5,000 nits Battery life Up to 60 hours Water resistance 10 ATM, IP69K Weight 61.5g From $1,299RRPAUD * * * The original Samsung Galaxy Watch Ultra was a beast of a smartwatch. That’s not necessarily a bad thing, but it’s not always a good thing either. It brought multi-day battery, multi-sport tracking and fast dual-frequency GPS to Samsung’s smartwatch lineup, but was uncomfortable to wear while sleeping because of its bulk. Two years later, the sequel addresses a lot of the issues I had with the original Galaxy Watch Ultra. Its refined design is much more comfortable to wear, and it’s much more resistant to the elements. It still only works with Android phones (and is ultimately designed to partner with Samsung phones specifically). But after spending a month with the Galaxy Watch Ultra2 wrapped around my wrist, I found it was comfortably the best Galaxy Watch I’ve ever reviewed, and definitely one of the best smartwatches you can buy right now. 💡 __Samsung supplied the Galaxy Watch Ultra2 on loan for this review.__ ## What makes the Samsung Galaxy Watch Ultra2 stand out? The Watch Ultra2 is Samsung’s flagship smartwatch. With a 47 mm case and exclusively available as an LTE version, the Ultra2 is a direct competitor to the Apple Watch Ultra 3 and Garmin’s premium wearables. But it’s the improvements over the original Galaxy Watch Ultra that really make this stand out. It’s 12% thinner, measuring in at 10.7 mm thick compared to the previous model’s 12.1 mm, yet boasts a bigger 800 mAh battery (compared to 590mAh in the previous generation). Not only that, but the Ultra2 is bright, with up to 5,000 nits of peak brightness, and it boasts an IP69K dust and water resistance rating alongside an EN13319 dive certification. Samsung has put significant effort into its Health app as well this year. The Ultra2 supports Samsung’s Heart Health Score and Daily Cardio Load, without needing an additional subscription. The watch is powered by the Snapdragon Wear Elite chipset, with Samsung promising security support until the middle of 2031. ### Samsung Galaxy Watch Ultra2 specs Category | Specification ---|--- Price | $1,299 RRP Case size | 47.4 × 47.1 × 10.7 mm Weight | 61.5g Colours | Titanium Silver, Titanium Gray Case material | Titanium case, sapphire crystal Buttons | Home, Back, programmable Quick Button Display | 1.5-inch Super AMOLED, 498 × 498, up to 5,000 nits Water resistance | 10 ATM, IP69K Battery capacity | 800mAh Battery life | Samsung claims up to 60 hours with AOD on, 80 hours with AOD off Positioning | Dual-frequency GPS (L1+L5), GPS, Glonass, Beidou, Galileo, QZSS Connectivity | eSIM LTE, Bluetooth 6.0, Wi-Fi 2.4/5GHz, NFC Processor and memory | Snapdragon Wear Elite, 2 GB RAM, 64 GB storage (49.3 GB available) Sensors | Optical heart rate, ECG, BIA, skin temperature, barometer, accelerometer, gyro, geomagnetic, light Software | Wear OS powered by Samsung, security updates until 31 July 2031 Strap | Marine Band (proprietary lug connector) Compatibility | Android 13 or later ## Design and build quality The original Galaxy Watch Ultra was a great smartwatch, but it was just far too bulky to wear all the time, particularly to bed. Even the strap was chunky. The Galaxy Watch Ultra2 has gone a long way fixing that. This is still a massive smartwatch, with a 47 mm case and a display that shows you heaps of information. But by slimming down the thickness of the watch, as well as tweaking the design so that it hugs the wrist a bit more closely, it doesn’t stand apart quite as much. If you don’t like wearing a watch to bed this won’t change that, but I found it wasn’t distractingly uncomfortable to wear overnight for sleep tracking. That said, anyone with small wrists is almost definitely going to find it too large. This is designed for adventure, and almost certainly better suited to larger masculine wrists than the standard Galaxy Watch. Despite its slimmer design, Samsung managed to boost the battery capacity and the screen brightness. With a peak brightness of 5,000 nits now, there’s no issue at all in bright sunlight. Samsung says it will also be better for diving underwater, but that wasn’t something I tested. There are three buttons on the right-hand side of the watch, as well as the touchscreen. The central orange button is preset as a shortcut to activities, but you can customise it to act as a shortcut for various functions, like opening an app or turning on the flashlight. I left it as it was for the bulk of my review, though. With its titanium and sapphire crystal construction, the Galaxy Watch Ultra2 feels exceptionally well-made and robust for even the most adventurous user. ## Performance Having moved straight from the Amazfit Active 3 Premium to this smartwatch, the first thing I noticed was just how useful automatic activity tracking is. Getting a light vibration on your wrist when you’ve been walking for 10 minutes to tell you the watch has started tracking your workout is such a great convenience. I also loved that it would pause the workout when I had to stop at traffic lights. Apple only does that for running or cycling, so I was thrilled when Samsung paused my walks. More than that though, I noticed just how quick it was to start tracking an activity manually, and how responsive the watch was to detect my location when I was being active. Sleep tracking is supposedly automatic, but I found that I needed to manually change modes on the watch to stop the display from blinding me once I crawled into bed. Fortunately, the data all seemed clear, easy to understand and accurate, at least compared to the Withings Sleep Analyser and the Oura Ring 5. The user interface is fairly easy to use, though the trio of buttons feels underused in my opinion. From your main screen, for example, a single press of the top button doesn’t seem to do anything. You need to double tap to go to the most recent app, or long press to open Gemini. The back button, meanwhile, only lets you short press to go to the previous screen. I wanted to be able to customise the actions for a short, long, and double press of all three buttons, which doesn’t seem too much of an ask. There are a few other features, like gesture control through pinching or knocking. They work reasonably well, though arguably not as reliably as an Apple Watch’s pinching gestures. There’s also the option to raise the watch to activate Gemini. I could never make it work, though I found very little inclination to use the feature beyond testing it out. ## Battery life and connectivity Samsung claims about 60 hours for the Galaxy Watch Ultra2, and you can just about get there if you aren’t overly active. For the most part, I was needing to charge every second day. Unfortunately, the charger isn’t fast enough. When reviewing the Apple Watch Series 11, I had a good routine of being able to drop it on the fast charger while I had a shower each day, and it would be ready to go when I got dressed. The Galaxy Watch Ultra2 still takes up to two hours to fully charge, which makes it easy to forget to put back on. It’s also worth flagging again that the watch itself will only connect to Android devices. Apple Watches have a similar limitation, so this is hardly a deal-breaker, but given the rise of devices like the Oura Ring 5, a lack of iOS compatibility feels like a missed opportunity. ## Verdict As far as Samsung’s smartwatches go, this is the best one I’ve had the chance to review. It offers solid battery life, an easy-to-use interface and a deceptively sleek design that packs a chunky smartwatch into something you can wear to bed. With its 5,000 nits of peak brightness and easy tracking of a range of fitness activities, this is a proper adventure watch. While it’s perfect for regular workouts, its spec sheet also promises the Watch Ultra2 as a solid partner for extreme sports. Samsung’s health tracking platform continues to get better every year, and is a legitimate competitor to Apple. It’s pricey, but if you are invested in the Samsung ecosystem and want the best smartwatch the company has to offer, this is it. ### Buy the Samsung Galaxy Watch Ultra2 if * **You use a Samsung phone and want the best Galaxy Watch.** This is Samsung's flagship, and it's designed to partner with Samsung phones specifically. * **You want a rugged watch you can wear overnight.** At 10.7 mm thick, it's slimmer than the original, and I found it wasn't distractingly uncomfortable for sleep tracking. * **You want a watch that tracks activity for you.** It vibrates after about 10 minutes of walking to say it has started tracking, and it pauses your walk when you stop at traffic lights. * **You want advanced health scores without paying extra.** Heart Health Score and Daily Cardio Load work without an additional subscription. ### Skip the Samsung Galaxy Watch Ultra2 if * **You have small wrists.** At 47 mm across, this is still a massive smartwatch, and anyone with small wrists is almost definitely going to find it too large. * **You use an iPhone.** The Ultra2 only connects to Android devices, and it needs Android 13 or later. * **You rely on quick top-up charges.** A full charge takes up to two hours, so dropping it on the charger during a shower won't get you there. * **You don't need an adventure watch.** At $1,299 RRP it's a lot to pay if a smaller, cheaper standard Galaxy Watch will do the job. **** ### Quick verdict The Galaxy Watch Ultra2 fixes the original's biggest problem. At 10.7mm thick it wasn't uncomfortable to wear overnight, and its 5,000-nit display has no trouble in bright sunlight. A full charge takes up to two hours and it only works with Android phones, but it's the best Galaxy Watch I've reviewed. #### Pros * 10.7mm thick, with a bigger 800mAh battery * 5,000 nits of peak brightness, with no issue in bright sunlight * Automatic workout tracking that buzzes after 10 minutes of walking and pauses at traffic lights * Heart Health Score and Daily Cardio Load work without a subscription #### Cons * A full charge takes up to two hours * At 47mm and 61.5g, it will almost definitely be too large for small wrists * Android only, and it needs Android 13 or later * The three side buttons are underused, with no custom short, long and double press actions #### Where to buy the Samsung Galaxy Watch Ultra2 From $1,299RRPAUD * * * ### Latest wearables deals * * * ## Frequently Asked Questions #### Does the Samsung Galaxy Watch Ultra2 work with iPhone? No, the Samsung Galaxy Watch Ultra2 does not work with iPhone. It only connects to Android devices running Android 13 or later, and it's designed to partner with Samsung phones specifically. #### How long does the Samsung Galaxy Watch Ultra2's battery last? Samsung claims up to 60 hours with the always-on display on, and up to 80 hours with it off. In testing, you can just about reach 60 hours if you aren't overly active, but I mostly needed to charge it every second day. #### Do you need a subscription to use the Galaxy Watch Ultra2's health features? No, you do not need a subscription to use the Galaxy Watch Ultra2's health features. Samsung's Heart Health Score and Daily Cardio Load both work without an additional subscription. #### How long does the Samsung Galaxy Watch Ultra2 take to charge? The Samsung Galaxy Watch Ultra2 takes up to two hours to charge fully. That's slower than I'd like, so it's not a watch you can drop on the charger while you shower and expect to be ready when you get dressed. #### Is the Samsung Galaxy Watch Ultra2 waterproof? The Samsung Galaxy Watch Ultra2 is rated 10 ATM and IP69K for dust and water resistance, and it carries an EN13319 dive certification. #### Is the Samsung Galaxy Watch Ultra2 too big for small wrists? Yes, the Samsung Galaxy Watch Ultra2 is likely to be too large for small wrists. It measures 47.4 × 47.1 × 10.7 mm and weighs 61.5g, and while it's slimmer than the original, it's still a massive smartwatch.