Samsung Galaxy Watch 4

The Samsung Galaxy Watch 4 (stylized as Samsung Galaxy Watch4) is a smartwatch developed by Samsung Electronics. It is the first Samsung watch to run Google's Wear OS since the Samsung Gear Live, and the first watch to run Wear OS 3, co-developed by Samsung and Google.[3] The device largely followed the design language of the preceding Samsung Galaxy Watch Active and Galaxy Watch 3, but including all new software.[4] The watch also included EKG, body compositional analysis, and blood pressure monitoring via the new Samsung BioActive sensor.[5] It was announced on August 11, 2021, at Samsung's Unpacked Event alongside the Samsung Galaxy Z Flip 3, Samsung Galaxy Z Fold 3 and Galaxy Buds 2.[6] The watch was released worldwide on August 27, 2021.

Samsung Galaxy Watch 4
From left to right: 40mm Watch 4, 46mm Classic and another Watch 4
BrandSamsung Galaxy
ManufacturerSamsung Electronics
SeriesSamsung Galaxy Watch series
ModelSM-R860, SM-R870, SM-R880, SM-R890 (Wi-Fi only), SM-R865U, SM-R875U, SM-R885U, SM-R895U (USA, LTE model)
Compatible networks2G, 3G, 4G
First releasedAugust 27, 2021 (2021-08-27)
PredecessorSamsung Galaxy Watch 3
Samsung Galaxy Watch Active 2
SuccessorSamsung Galaxy Watch 5
TypeSmartwatch
Operating systemWear OS 4 with One UI Watch 5
CPUExynos W920 dual core 1.18 GHz; GPU: Mali-G68
Memory1.5 GB RAM
Storage16 GB
Battery
Display
External displayAlways On Display
Data inputs
WebsiteOfficial Website
References[1][2]

Specifications
Model Galaxy Watch 4 Galaxy Watch 4 Classic Source
Size 40 mm 44 mm 42 mm 46 mm [1]

[2]

Part No. SM-R860 (Wi-Fi)
SM-R865 (LTE)		 SM-R870 (Wi-Fi)
SM-R875 (LTE)		 SM-R880 (Wi-Fi)
SM-R885 (LTE)		 SM-R890 (Wi-Fi)
SM-R895 (LTE)
Colors Black, Green, Pink Gold, Silver Black, Green, Silver Black, Silver
Display 1.2" (30.4 mm) 1.4" (34.6 mm) 1.2" (30.4 mm) 1.4" (34.6 mm)
Resolution 396 x 396 pixels 450 x 450 pixels 396 x 396 pixels 450 x 450 pixels
Glass Corning Gorilla Glass DX+ Corning Gorilla Glass DX
Chassis Aluminum Stainless Steel
Processor Exynos W920 dual-core 1.18 GHz Cortex-A55
Operating System WearOS (OS 3.0)
UI One UI Watch 3
Size (Excluded the health sensor) 40.4 mm x 39.3 mm x 9.8 mm 44.4 mm x 43.3 mm x 9.8 mm 41.5 mm x 41.5 mm x 11.2 mm 45.5 mm x 45.5 mm x 11.0 mm
Weight (without strap) 25.9 g 30.3 g 46.5 g 52.0 g
Strap Size 20 mm
Water Resistance 5ATM + IP68 / MIL-STD-810G
Memory 1.5 GB RAM + 16 GB flash memory
Connectivity
Sensors
  • Heart Rate Monitor
  • Blood Oxygen Monitor
  • Electrocardiography (ECG)
  • Blood Pressure Monitor
  • Bioelectrical Impedance Analysis
  • Accelerometer
  • Barometer
  • Gyro Sensor
  • Geomagnetic Sensor
  • Light Sensor
Battery 247 mAh 361 mAh 247 mAh 361 mAh

Software

The smartwatch was the first watch released by Samsung to use Wear OS instead of Samsung's own Tizen OS.[7]

This smartwatch is region locked in mainland China, unlike past models.

Supported languages and regions

Unlike past Wear OS devices, Wear OS 3 supports a wider variety of languages that the end user can choose from. An ADB command can be used to temporarily change the watch's language to another one, which will reset when the device is reconnected to the phone.

Depending on the region where the device was sold from, the language and region options may differ.

See also

References
  1. "Galaxy Watch4 and Galaxy Watch4 Classic: Reshaping the Smartwatch Experience". news.samsung.com. Retrieved August 29, 2021.
  2. "Samsung Galaxy Watch 4 hits FCC ahead of possible 28 June unveil". wareable.com. Retrieved September 1, 2021.
  3. "Galaxy Watch 4 Review: Wear OS is Back, Baby!". www.droid-life.com. 20 August 2021. Retrieved 25 August 2021.
  4. Cipriani, Jason; Krol, Jacob (24 August 2021). "Samsung's Galaxy Watch 4 ushers in a new era of Android smartwatches". CNN. Retrieved 25 August 2021.
  5. Bohn, Dieter (18 August 2021). "Galaxy Watch 4 review: welcome to Samsung's garden". The Verge. Retrieved 25 August 2021.
  6. Stein, Scott. "Galaxy Watch 4: Samsung is coming for Apple Watch's crown with Wear OS 3". CNET. Retrieved 25 August 2021.
  7. "Galaxy Watch 4 review: welcome to Samsung's garden". www.theverge.com. 18 August 2021. Retrieved September 1, 2021.
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