The Galaxy Watch 9 has been on sale since 7 August 2026, and it is the Samsung watch to look at if you want the cushion-case design with a quicker chip underneath. It is a quieter year than the Watch 8 was. The case is the same shape, the 40mm battery is a fifth larger, the 44mm battery barely moved, and the people who have worn it for a month are still putting it on a charger most days. This review is for anyone choosing between the Watch 9, last year's Watch 8 on sale, and stepping outside Samsung altogether.
Disclosure: Fitcoin makes a fitness-rewards app that can read workouts Samsung Health writes to Health Connect. We have no commercial relationship with Samsung. We have not worn a Watch 9 for this piece. Prices and specifications come from Samsung's UK newsroom of 22 July 2026 and Samsung's US product pages, checked again on 8 November 2026. Wearing notes come from Wareable's month-long test, published 6 September 2026, and from PCMag's battery timings.
The verdict
Buy the Galaxy Watch 9 if you are coming from a Watch 6 or older and your phone is a Samsung, because that is when the new health scores, ECG and blood pressure all switch on together. If you already wear a Watch 8, keep it: the case is the same and a month of testing still ended in a daily charge, so the quicker chip is a pleasant extra rather than a reason to spend another £349. Without a Galaxy phone, price a Pixel Watch or the Fitbit Edge first, since the tools Samsung uses to justify this watch stay switched off.
Two cells, two very different upgrades
Samsung's own FAQ says the 40mm Watch 9 has a battery 20 percent larger than the 40mm Watch 8, and the arithmetic checks out: 325mAh last year, 390mAh now. The 44mm is a different story. Last year's 44mm was 435mAh and this year's is 445mAh, about 2 percent, so the "20 percent larger" line belongs to the small watch. If you read it as the whole lineup, the larger size will feel like a letdown on paper before you have even worn it. What the 44mm did gain is the Snapdragon Wear Elite chip, the same platform as the Galaxy Watch Ultra 2 and listed by Samsung as the Qualcomm SDW6100. That chip is the real change on the bigger watch, and a faster chip tends to spend spare capacity on the screen and the radios, which is why the hours below matter more than the milliamp sticker.
Watch 8 cells from Android Central's Watch 8 review. Watch 9 cells from Samsung's US FAQ. The 20 percent figure Samsung publishes is the 40mm comparison.
On a wrist those cells turn into a range, and the range is what to plan around. Samsung support, replying to owners on the UK store, describes the watch as capable of up to 40 hours, and says the always-on display and continuous health monitoring are what pull that down. PCMag's test landed at 26 hours with the always-on display enabled, and 41.5 hours with it off, a little ahead of the 39 hours they recorded on a Watch 8 with the screen set the same way. Wareable, after a month that included GPS running, stayed between 24 and 30 hours, and put the Ultra 2's multi-day result down to the size of its cell. If you sleep in the watch and record runs, a charge most days is the figure to budget. If you turn the always-on screen off and keep GPS rare, two nights is realistic. Anyone whose whole brief is a week between chargers is in a different category of band, and the Fitbit Edge's seven-day claim is the nearer comparison.
What you are actually buying
Two aluminium sizes, both 8.6mm thick. The 40mm is 42.7 by 40.4mm and 31.5 grams, with a 1.34-inch Super AMOLED at 438 by 438 pixels. The 44mm is 46.0 by 43.7mm and 34 grams, with a 1.47-inch panel at 480 by 480. Both peak at 3,000 nits, both do full-colour always-on, and both are rated 5 ATM and IP68. Samsung lists 2GB of memory. Storage on the Watch 9 is 32GB, with the 64GB figure in the same newsroom table belonging to the Ultra 2. Bluetooth is 6.0 on the current US spec page, with optional LTE, Wi-Fi, NFC and dual-frequency GPS. Colours follow the size: Cream and Graphite on the 40mm, Silver and Graphite on the 44mm.
UK list prices, from Samsung's newsroom when pre-orders opened on 22 July, are £349 for the 40mm Bluetooth, £399 with LTE, £379 for the 44mm Bluetooth and £429 with LTE. General sale started on 7 August. In the US, launch coverage from Android Central put Bluetooth at $379 and $409, with LTE at $429 and $459. When we opened Samsung's US size selector on 8 November, it showed $429.99 beside the 40mm and $459.99 beside the 44mm, so the shelf has moved since the summer and the page in front of you is the one to trust. Bands are a separate purchase. Charging needs a moment of planning too: Samsung has told owners that pucks from earlier Galaxy Watches do not fit, so a travel spare has to be a Watch 9 charger, and a full charge takes on the order of an hour and a half. If you are coming from a Watch 6, pack the new puck before a trip or the watch will sit at whatever charge you left the house with.
The health tools, and the phone they need
Energy Score is Samsung's morning number. The company describes it as a daily rating of how well you recovered, shaped by recent sleep, activity and your heart rate during sleep, with Galaxy AI tips on top. Use it to choose between a run and an easy day, and treat it as a wellness figure rather than a medical one. How the score is built, and which other apps can sit beside it, is already in our Galaxy Watch recovery apps guide. What this generation adds, shared with the Ultra 2, is a wider set of summaries around that number. Wareable describes Vitals as a view of five overnight signals, resting heart rate, HRV, respiratory rate, skin temperature and blood oxygen, which takes about a week to learn your baseline and then only speaks up when one of them leaves it. PCMag and Wareable both also cover a Fitness Index that draws cardio, endurance, strength, flexibility and body composition as a radar against people of your age and sex, plus a Cardio Load figure for accumulated strain and a Heart Health score that folds sleep, stress, activity and that wrist body-composition reading into one snapshot.
Two of those inputs deserve a slower reading. Wrist bioimpedance, the body-composition measurement Samsung has offered since the Watch 4, only behaves if you measure it the same way every time, and Wareable is open that a wrist reading is a shaky thing to let dominate a health score. The Antioxidant Index is a separate, deliberate check: you put your thumb on the sensor, Samsung estimates carotenoids in the skin, and you get a score from 0 to 100. Samsung is clear that this is a wellness trend, not a test for a medical condition. Blood pressure still needs a cuff calibration every four weeks and a Galaxy phone on Android 12 or newer, and it is not for diagnosis or for anyone under 22. ECG and irregular-rhythm notifications are in the same boat: they need a Samsung phone, and they only run in countries where the software is cleared. Sleep apnoea detection, where it is offered, looks for signs of moderate to severe obstructive apnoea over two nights and is region-locked. If the watch suggests you see a clinician, that is the point of the feature. The everyday sleep tracking, stages, skin temperature and optional snore detection through the phone's microphone, works without that medical layer, and Wareable found bedtime and wake-up timing reliable on the unit they wore.
Running with it
GPS did what you would hope from a dual-frequency watch whose positioning hardware did not change this year. Wareable's routes stayed within 20 metres of a Garmin Fenix 8 Pro on multi-band, which is close enough that a park loop or a commute will map cleanly. Heart rate was less settled. The same BioActive sensor has been one of Samsung's better results on the Watch 8 and the Ultra 2, and on this Watch 9 a steady run dropped out for a stretch near the end, far enough from a Garmin HRM 600 chest strap to pull the session average around. A later interval session missed the warm-up and the first efforts before it found the strap again, while a second steady run the same week finished within half a beat, latency and all. Wareable ran more than ten sessions and still could not say why this unit wandered when the Ultra 2, on the same sensor generation, held a line. Give a new watch a few runs before you trust a single file, and if interval heart rate is the number you train from, a chest strap is still the reference.
The software around the workouts is genuinely nicer to live with, and a lot of it will not stay exclusive to this watch. One UI 9 Watch adds Raise to Talk, so you can lift the wrist and speak to Gemini instead of holding the button, and it splits the gestures so a double pinch confirms and a shake dismisses. Wareable liked both, and noted that the skin is rolling out to watches people already own, so by November an 8 on a software update may grow the same gesture. That makes the chip and the 40mm cell the reasons to choose a 9, with the gestures as a bonus you might get either way. The cushion case, which was the exciting part of last year, is unchanged, and Wareable still prefers it to the Pixel Watch's smoother pebble if you want something that looks like a watch. Owners coming from a Watch 6, writing on Samsung's own store, miss the physical rotating bezel. The on-screen version is quick, and it is easy to scroll past the tile you meant, so give yourself a day or two before deciding the interface is the problem.
Against the Watch 8 and the Fitbit Edge
| Galaxy Watch 9 | Galaxy Watch 8 | Fitbit Edge | |
|---|---|---|---|
| Price | From £349 | Launched at $349 | $179.99 / £159.99 |
| Battery in real use | About a day, up to 40 hours claimed | About a day | Up to 7 days, 2 with always-on |
| Software | Wear OS, full apps | Wear OS, full apps | Fitbit OS, built-in apps |
| ECG and blood pressure | Yes, on a Samsung phone | Yes, on a Samsung phone | ECG yes, no cuff blood pressure |
| Works with iPhone | No | No | Yes |
The choice that matters more than 40mm versus 44mm is which phone is already in your pocket. On a Galaxy handset you get the full health shelf, including the cuff-calibrated blood pressure reading we put in context in fitness trackers that measure blood pressure. On a Pixel, a Nothing, a Motorola or an older OnePlus you still get a capable Wear OS watch: notifications, Google apps, GPS, sleep, heart rate, Energy Score, and a case with more character than Google's. The blood pressure and ECG tools Samsung leans on at this price stay off, so it is worth pricing those other watches before you pay a Samsung premium for a shelf you cannot open.
If a week of battery and a small screen is the actual brief, the Fitbit Edge is Google's current answer at $179.99 or £159.99, with GPS and ECG, iPhone support, and none of Samsung's phone lock. If you want the band that will outlast any of these and you can live without GPS, the Xiaomi Smart Band 11 is €59.99. And if a Watch 8 is already on your wrist and still holding its day of charge, the £349 is better kept for the next time that watch actually needs replacing.
Frequently asked questions
Should you upgrade from a Galaxy Watch 8 to the Watch 9?
Only if the quicker chip is something you will notice, or you specifically want the 40mm and its larger battery. The cushion case is the same as the Watch 8, and Wareable's month with a 44mm still came out at 24 to 30 hours, so the look and the daily charge will feel familiar. Several of the software changes are also arriving on older watches, which makes a swap for the gestures alone hard to justify.
How long does the Galaxy Watch 9 battery last?
Samsung support on the UK store describes up to 40 hours, depending on use. PCMag measured 26 hours with the always-on display on and 41.5 hours with it off. Wareable, over a month that included GPS runs, stayed in a 24 to 30 hour range. Plan on charging most days if you sleep in it and track workouts.
Does the Galaxy Watch 9 work with a Pixel or another Android phone?
The watch pairs with Android for steps, sleep, heart rate, notifications and Google apps. ECG, irregular rhythm notifications and the blood pressure feature need a Samsung Galaxy phone, a cuff calibration every four weeks for blood pressure, and availability that depends on the country. If those health tools are why you are buying, a non-Samsung phone leaves them switched off.
What is the Galaxy Watch 9 Energy Score?
Samsung describes it as a daily rating of how well you recovered, built from recent sleep, activity and your heart rate during sleep. It is a wellness figure for planning the day, not a diagnosis. How the score is put together, and which other recovery apps work beside it, is covered in our Galaxy Watch recovery apps guide.
How much does the Galaxy Watch 9 cost?
Samsung's UK newsroom RRP is £349 for the 40mm Bluetooth, £399 for 40mm LTE, £379 for the 44mm Bluetooth and £429 for 44mm LTE. US launch coverage put the Bluetooth models at $379 and $409. On 8 November 2026 Samsung's US size selector was showing $429.99 and $459.99, so check the live page before you pay.
Method: Written 8 November 2026 from Samsung's UK newsroom announcement of 22 July 2026 (RRP, dimensions, weights, cells, SDW6100, on-sale date of 7 August), Samsung's US Galaxy Watch 9 FAQ (40mm battery described as 20 percent larger than the Watch 8 40mm, 390mAh and 445mAh, Snapdragon Wear Elite, Bluetooth 6.0, Energy Score definition, colours), Samsung Health's feature notes for Antioxidant Index, blood pressure calibration and regional limits, Android Central's Galaxy Watch 8 cell sizes (325mAh and 435mAh) and its Watch 9 launch prices, the US size selector as it rendered on 8 November 2026, Wareable's review of 6 September 2026, and PCMag's always-on and always-off battery timings. We have not worn the watch.
Related reading: Galaxy Watch recovery apps, Fitness trackers that measure blood pressure, Fitbit Edge, Xiaomi Smart Band 11 review, Samsung Galaxy Ring 2
About the author: Harris Khan is the co-founder and CTO of Fitcoin, a UK fitness-rewards and health-insights app that reads Apple Health and Health Connect.