Samsung Galaxy Watch 4

© Provided by TechRadar Samsung Galaxy Watch 4

Two-minute review

The Samsung Galaxy Watch 4 is a sequel to one of our favorite smartwatches ever, and it’s the first time in a while that we’ve seen the company embrace Wear OS software. It’s not your typical Wear OS watch though; it’s called One UI Watch 3, and it’s been built by Samsung with Google’s help.

On paper, the overall upgrade is limited, but the Watch 4 is suitable for anyone who’s looking for a top-end smartwatch that can track workouts, as well as offer a lot of other smart features that many alternative wrist companions can’t.

That said, the Galaxy Watch 4’s compatibility isn’t as varied as previous Samsung watches. If you own an iPhone, this won’t work with it, and while it’s compatible with all modern Android phones except for Huawei, you’ll need to own a Samsung smartphone to access some features, such as blood pressure or ECG measurements.

That is likely to be a disappointment to many, as Samsung’s previous smartwatches are some of the best in terms of compatibility. We’d still say the Watch 4 is worth having if you own a non-Samsung Android phone that’s also not Huawei, but you should note that there are limitations.

There’s a virtual rotating bezel – a returning feature from the Samsung Galaxy Watch Active 2 – which, in conjunction with two buttons on the right-hand side  allows for easy navigation around the smartwatch’s menus. Some may miss the physical rotating bezel from the Galaxy Watch 4, but this is a good alternative.

The fitness features here aren’t hugely different to what we’ve seen before, but there is a new body composition tool that gives you a rough idea of your body fat percentage. We’ve found that GPS, heart rate monitoring and other fitness features are well thought out on the Galaxy Watch 4.

Battery life isn’t a huge concern on the Galaxy Watch 4, but it isn’t the longest lasting smartwatch we’ve ever seen. It’ll last up to around two days with normal to intensive usage, and around three days if you’re not working out or using features like GPS.

Introduced alongside the Samsung Galaxy Z Fold 3 and Galaxy Z Flip 3, the Galaxy Watch 4 is joined by a Samsung Galaxy Watch 4 Classic – you should look at that smartwatch if you want a physical rotating bezel, which is the major difference between the two devices.

As for the Galaxy Watch 4, this smartwatch is a great choice for anyone who owns a Galaxy smartphone. If you own a different Android phone, it’s still a worthy choice for your next smartwatch, but there are caveats around the features mentioned above.

Samsung Galaxy Watch 4 release date and price

The Samsung Galaxy Watch 4 is available now in the UAE.

There are two sizes of the Galaxy Watch 4. The smaller 40mm version costs AED 949 while the larger 44mm model costs AED 1,069. Both of these prices are for the Bluetooth version. There is an LTE version as well but that hasn’t been released in the UAE.

If you want a larger smartwatch with a physical rotating bezel, you’ll want to opt for the Galaxy Watch 4 Classic. That’s a separate product line this year, although a lot of the specs are similar between that device and this one.

The Galaxy Watch 4 Classic 42mm costs AED 1,339 while the 46mm model costs AED 1,449.

Design and display

The Samsung Galaxy Watch 4 is a slimline smartwatch with a design that sits comfortably on your wrist. If you’re looking for something a touch chunkier, or you’d like a rotating bezel, you should opt for the Samsung Galaxy Watch 4 Classic.

For those looking for a slimmer design, the Galaxy Watch 4 offers that, with two buttons on the right-hand edge and little else to detract from its sleek looks. It comes in two models, one with a 40mm watch face and another with a 44mm body.

Both models are made of aluminum. The dimensions of the 40mm model are 40.4 x 39.3 x 9.8mm with a weight of 25.9g, while the 44mm is 44.4 x 43.3 x 9.8mm and weighs 30.3g.

We’ve worn both models, and we found both to be a comfortable fit without weighing down our wrist.

We’ve used the 44mm model for a longer period than the smaller model, and we found that to be a suitable size (note that this writer is an adult man). It’s comfortable to wear throughout the day, although it may not be the best fit to wear at night for sleep tracking.

The screens on both Galaxy Watch 4 models look bright, and we found them easy to read. The resolution is also impressive, with the 40mm watch featuring a 396 x 396 resolution and the 44mm model taking that up to 450 x 450. That’s 330 pixels per inch for both models.

One unique feature of the Galaxy Watch 4 compared to other smartwatches is its ‘virtual’ rotating bezel feature. There’s no physical rotating bezel here – go for the Watch 4 Classic if that’s a feature you want – but you can run your finger around the black bezel of the screen to rotate through menus and access different features.

Each model is also IP68 water- and dust-resistant, which means you can take them into water up to five meters deep. A word about the supplied watch band though – it’s made of a new material that may not handle intense workouts well, as we found it left something of a rash on our wrist.

You may want to invest in a band made from different material if you regularly wear your watch to the gym.

Color options vary between models, too. The 40mm Watch 4 comes in black, gold and silver, while the 44mm model comes in black, green and silver. All of these are relatively muted colors, so you may want to buy another strap if you want a bolder shade on your wrist.

Performance and software

The Watch 4 features Samsung’s own Exynos W920 chipset and 1.5GB of RAM. Throughout our testing time we’ve found this to be enough power to run a variety of apps smoothly without any slowdown. This is one of the fastest smartwatches we’ve ever used.

This speed isn’t as noticeable as it might be on a smartphone or a laptop, but it is noticeable when compared to other smartwatches, and it allows you to use a variety of apps while the GPS features are running, for example.

There’s 16GB of storage on both models of the Galaxy Watch 4. We found that about 8GB of this was taken up with the OS and preloaded apps, which leaves you with the same again for your own apps and music.

Its software is where the Galaxy Watch 4 shines. Samsung isn’t using its own Tizen wearables software here, and is instead re-embracing Google’s Wear OS, although with its own spin.

You’d be forgiven for being confused here. Tizen has been the focus of Samsung’s software efforts in recent years, and the software running on the Galaxy Watch 4 looks similar to it.

Instead, this is Wear OS 3 but with Samsung’s own skin, called One UI Watch 3, on top. It includes a variety of Samsung apps that you’ll be used to if you’ve had a Galaxy Watch before, but this is primarily Wear OS.

That means you’ve got access to the Google Play Store, and while Wear OS isn’t the best-supported platform apps-wise, you’ve got more/a lot more/whatever options than you have on Tizen. The design, meanwhile, still feels distinctly Samsung.

The software on the Galaxy Watch 4 looks good and works smoothly, plus you’ll find all of the apps available on the Google Play Store are ready and waiting. This is a better solution than Tizen, but it keeps all the benefits that made Tizen software great.


The Samsung Galaxy Watch 4 comes with a whole host of health and fitness features, including GPS for tracking runs, an optical heart rate sensor, and ECG support.

The big fitness changes come in the form of a new 3-in-1 BioActive Sensor that enables the watch to monitor heart rate, blood oxygen levels and body composition. The last in that list is the only new feature, but this is the first time the sensors have been combined.

Samsung says its body composition measurement tools enable you to see key fitness metrics such as skeletal muscle mass and body fat percentage. These scans are easy to run, although you’ll need to stay still in order for them to work.

The stats you’ll get include a body fat percentage score, skeletal muscle, fat mass, body water and BMI. It’ll also give you a rough idea of the healthy range for your sex, weight and height.

It’s hard to tell how accurate these various metrics are, but we found it useful to have at least a rough idea of them, and you’ll be able to track these over a period of time to see if you can improve the results.

The heart rate monitor proved accurate, with our results tallying with measurements taken using other devices. The heart rate monitor worked best within Samsung’s own apps, but you can also apply these features to third-party Wear OS tools like Strava and Nike Running Club.

We also found the GPS features worked well when we took the watch running with accurate positioning when compared to other devices.

One important thing to note is the limited compatibility of some fitness features. The ECG and blood pressure monitoring tools are only available when you connect the Galaxy Watch 4 to a Samsung smartphone.

This is a frustrating element, and it means this watch may not be the best choice for you if you don’t own a Samsung phone. Alternative devices from brands such as Garmin offer similar features, but across any phone.

Battery life

The 44mm Galaxy Watch 4, which is the model we reviewed, is powered by a 361mAh battery, and battery life proved strong during our testing time – we found the smartwatch would last at least two days from a single charge even with intensive use, and if you’re not regularly using fitness features, you can expect the watch to last for a full three days.

The 40mm version comes with a smaller 247mAh cell, and we’ve yet to be able to test how well this performs. Our experience with previous Samsung smartwatches has seen a slight difference in battery life between the smaller and larger model, but you shouldn’t expect the 40mm variant to be dramatically different.

There’s a charging pad included in the box, which is a bit of a surprise as Samsung has dropped these from its smartphones in recent years. That said, you’ll just get the cable here so you’ll have to find a charging block or plug it directly into a USB compatible device.

Should you buy the Samsung Galaxy Watch 4?

Buy it if… 

You own a Samsung phone

Some of the best Samsung Galaxy Watch 4 features are locked to Samsung phones, so if you already own one of its handsets you’ll be able to make the most out of this smartwatch.

You want great smartwatch software

Samsung’s Tizen look has developed a lot in recent years, and combining it with the functionality of Wear OS – giving you access to the Google Play Store’s full range of wearable apps.

You want a solid fitness experience

The Samsung Galaxy Watch 4 isn’t the most highly-specced fitness watch you can buy, but it’s suitable for most people with the core features of GPS, a great heart rate monitor and a variety of other tools too – although you’ll need a Samsung phone in order to use some features.

Don’t buy it if…

You own an iPhone or non-Samsung Android phone

Samsung has dropped support for iPhones on the Galaxy Watch 4, which is frustrating for those who have an iPhone but don’t want an Apple Watch. And, as we’ve mentioned, some of the health monitoring features aren’t compatible with Android phones from other brands.

You own a Samsung Galaxy Watch already

If you own a recent generation of the Galaxy Watch, you probably won’t need the Galaxy Watch 4. There isn’t enough that’s new here, especially over the Galaxy Watch Active 2, so it may not be for you.

You want a rotating bezel

One of the most exciting unique features of the Galaxy Watch series is its spinning bezel, and you won’t get that on the standard Galaxy Watch 4. If you want the physical bezel, you’ll want to look at the Galaxy Watch 4 Classic.

First reviewed: August 2021

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