Launching alongside the Galaxy Z Fold 3, Flip 3 and Buds 2, the Samsung Galaxy Watch 4 Series offers up what looks like more choice than ever before; with two variants, each in two sizes and all available with optional LTE connectivity.

The Galaxy Watch 4 and Watch 4 Classic serve up two distinct design styles while delivering on performance (by way of a new Samsung-made wearable chipset) and a serving up a new user experience; debuting the latest iteration of Wear OS, which the company has co-developed with Google.

When can I buy the Galaxy Watch 4?

In terms of the watch's unveiling, the arrival of the Galaxy Watch 4 took place at Unpacked on 11 August.

As for availability, the Watch 4 series hit pre-order immediately, running until 26 August, with the watches going on sale from 27 August.

Galaxy Watch 4 44mm green, animal watch face hands-on

For context, the original Galaxy Watch and Galaxy Watch 3 both arrived in the August of their respective launch years, with the Galaxy Watch Active and Active 2 changing tact, making their debuts in April and September of the same year (2019).

How much does the Galaxy Watch 4 cost?

Samsung's August Unpacked lineup all arrive with markedly more affordable opening asking prices than their respective predecessors; with the smallest Watch 4 variant kicking things off at £249/€269/US$249.99 and the Classic starting at £349/€369/US$349.99.

Here's key international pricing across the whole range:

Galaxy Watch 4 (40mm)

  • Bluetooth-only = £249/€269/US$249.99
  • 4G = £289/€319/US$299.99

Galaxy Watch 4 (44mm)

  • Bluetooth-only = £269/€299/US$279.99
  • 4G = £309/€349/US$329.99

Galaxy Watch 4 Classic (42mm)

  • Bluetooth-only = £349/€369/US$349.99
  • 4G = £389/€419/US$399.99

Galaxy Watch 4 Classic (46mm)

  • Bluetooth-only = £369/€399/US$379.99
  • 4G = £409/€449/US$429.99

If you're tempted to pick up a Galaxy Watch 4, check out our Where to Buy feature, which includes deals and more.

For reference, 2020's Galaxy Watch 3 came in two sizes - 41mm and 45mm - and cost £399/$399 or £419/US$429, respectively. There's also a cellular version of Watch 3 which costs a little more at £429/US$449 and £459/US$479, depending on the size you swing for.

The Galaxy Watch Active and Active 2 started at £199/US$199.99 and £249/US$249.99, respectively.

What features does the Galaxy Watch 4 offer?

The standard Galaxy Watch 4 features a contemporary design, with brushed aluminium lugs that extend to encapsulate the black polished metal body of the watch, while the Classic sports more conventional timepiece styling (similar to the Galaxy Watch 3), with a stainless steel body and – most prominently – a physical rotating bezel for interaction.

Depending on whether you opt for the smaller or larger-bodied version of either Watch 4, you can expect a 1.19in or 1.36in circular AMOLED display that sports a pixel density of 330ppi.

The BioActive Sensor branding that relates to the overarching fitness hardware inside the Watch 4 now extends to the two physical buttons on the watch's right side. While the top button serves as a home key and the bottom a back key, soft-pressing both after tapping 'Measure' on the new Body Composition app lets the Watch 4 get a read on things like your body's water retention, bone density and BMI.

Galaxy Watch 4 body composition hands-on

Samsung says blood oxygen reading can now take place passively, while the Wath 4 tracks your sleep and functionality like the ECG – first seen on the Watch Active 2 – which took time to reach approval in various markets around the world, should be available to users from the get-go (in markets where previous Galaxy Watches had already received approval – Samsung suggests this includes nearly 40 regions).

Back in mid-May at Google I/O 2021, Google officially revealed that it was teaming up with Samsung to fuse Wear OS and Tizen OS into a single platform, which Samsung then confirmed would be powering its next Galaxy Watches; pulling in additional wellness and fitness features supplied by the now Google-owned Fitbit.

Samsung Galaxy Watch 4 BioActive Sensor hands-on

Following the Watch 4's announcement, the Korean company was quick to highlight that Wear OS as it appears on the Watch 4 Series is 'Wear OS Powered by Samsung', which doesn't reflect the experience as it might appear on forthcoming wearables from other manufacturers that choose to adopt this latest Wear OS release.

Samsung's take, which it calls One UI Watch, embraces much of what made Tizen (which ran on its previous Galaxy Watches) so approachable; like interaction by rotation (using the physical bezel on the Classic or the digital haptic alternative on the standard Watch 4), while Wear OS means the Google Play Store and experiences like Google Maps and Google Pay can now be accessed and can leverage the Watch 4's hardware.

Galaxy Watch 4 and Watch 4 Classic hands-on

Speaking of hardware, the Watch 4 Series also serves as the debut for Samsung's newest wearable-centric chip, the 5nm Exynos W920, which is expected to be a huge leap forward compared to the best Qualcomm currently has to offer – the Snapdragon Wear 4100+, with its 12nm process and even the 10nm chip at play inside the Galaxy Watch 3.

According to Samsung, this latest silicon promises “1.25x faster processing times compared to the Exynos 9110” and “8.8x smoother graphics performance.” 1.5GB of RAM and double the storage (16GB up from 8GB on the Watch 4's predecessor) also features, while longevity should be greatly improved too, with Samsung quoting 40 hours of wear per charge across the Watch 4 line.

Here's a full rundown of the Galaxy Watch 4 Series' spec sheet:

  • 1.19in circular 396x396 Super AMOLED always-on display (40mm Watch 4, 42mm Watch 4 Classic)
  • 1.36in circular 450x450 Super AMOLED always-on display (44mm Watch 4, 46mm Watch 4 Classic)
  • Gorilla Glass DX+
  • 1.18GHz dual-core Samsung Exynos W920 5nm processor
  • 1.5GB RAM
  • 16GB ROM
  • Wear OS Powered by Samsung (operating system)
  • One UI Watch (user experience)
  • Bluetooth 5.0
  • NFC
  • GPS
  • WiFi
  • 4G LTE via eSIM (optional)
  • Accelerometer
  • Barometer
  • Gyro sensor
  • Geomagnetic sensor
  • Light sensor
  • Compass
  • Microphone
  • Speaker
  • Haptic motor
  • Samsung Knox security
  • Samsung BioActive Sensor:
    • Optical heart rate sensor (PPG)
    • Electrical heart sensor (ECG)
    • Bioelectrical impedance analysis sensor (BIA)
  • Heart rate tracking
  • Blood oxygen tracking
  • AFib irregular heartbeat detection
  • Sleep tracking
  • Snore detection
  • Body composition analysis
  • Guided workouts
  • Bixby Voice support
  • Gesture controls
  • Aluminium casing (Watch 4)
  • Stainless steel casing (Watch 4 Classic)
  • 5ATM swim-proof
  • IP68-certified dust and water-resistance
  • MIL-STD-810G tested
  • Wireless charging (supports Qi charging)
  • 247mAh battery (40mm Watch 4, 42mm Watch 4 Classic)
  • 361mAh battery (44mm Watch 4, 46mm Watch 4 Classic)
  • Up to 40 hours battery life
  • 30 minutes charge = 10 hours use
  • 40.4 x 39.3 x 9.8mm (40mm Watch 4)
  • 44.4 x 43.3 x 9.8mm (44mm Watch 4)
  • 41.5 x 41.5 x 11.2mm (42mm Watch 4 Classic)
  • 45.5 x 45.5 x 11mm (46mm Watch 4 Classic)
  • 25.9 grams (40mm Watch 4)
  • 30.3 grams (44mm Watch 4)
  • 46.5 grams (42mm Watch 4 Classic)
  • 52 grams (46mm Watch 4 Classic)
  • Colours:
    • Black, pink gold, silver (40mm Watch 4)
    • Black, green, silver (44mm Watch 4)
    • Black, silver (42mm & 46mm Watch 4 Classic)
  • Compatible with Android 6.0 or higher (devices require more than 1.5GB RAM)

We discussed the Galaxy Watch 4 line – along with all the other new products announced in the same week – in an episode of our weekly podcast Fast Charge, which you can watch right here:

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