Samsung Galaxy Watch4

Specifications
Samsung Galaxy Watch4
MORE PICTURES
  • 1.4" 450x450 pixels
  • NO
  • 1.5GB RAM Exynos W920
  • 361mAh 5W
Released 2021, August 27 30.3g (44mm), 25.9g (40mm), 9.8mm thickness Android Wear OS 4, One UI Watch 5 16GB storage, no card slot
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ALL VERSIONS

44MM

40MM

Versions: Bluetooth; Bluetooth/LTE

Network
Technology GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100
4G bands 1, 3, 5, 7, 8, 20
Speed HSPA, LTE
Launch
Announced 2021, August 11
Status Available. Released 2021, August 27
Body
Dimensions 44.4 x 43.3 x 9.8 mm (1.75 x 1.70 x 0.39 in)
Weight 30.3 g (44mm), 25.9 g (40mm) (1.06 oz)
Build Glass front (Gorilla Glass DX+), aluminum frame
SIM eSIM
 MIL-STD-810G compliant*
IP68 dust tight and water resistant (immersible up to 50m)
Compatible with standard 20mm straps
ECG certified
Blood pressure monitor
*does not guarantee ruggedness or use in extreme conditions
Display
Type Super AMOLED
Size 1.4 inches
Resolution 450 x 450 pixels (~321 ppi density)
Protection Corning Gorilla Glass DX+
Platform
OS Android Wear OS 4, One UI Watch 5
Chipset Exynos W920 (5 nm)
CPU Dual-core 1.18 GHz Cortex-A55
GPU Mali-G68
Memory
Card slot No
Internal 16GB 1.5GB RAM
Camera
  No
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Sound
Loudspeaker Yes
3.5mm jack No
Comms
WLAN Wi-Fi 802.11 a/b/g/n, dual-band
Bluetooth 5.0, A2DP, LE
Positioning GPS, GLONASS, GALILEO, BDS
NFC Yes
Radio No
USB No
Features
Sensors Accelerometer, gyro, compass, barometer, heart rate, SpO2
Battery
Type Li-Ion 361 mAh
Charging Wireless
Misc
Colors Black, Pink Gold, Silver, Green, Thom Browne Edition, Bespoke Edition, PXG Golf Edition
Models SM-R860, SM-R870
Price About 110 EUR

User opinions and reviews

  • Someone
  • 08 Sep 2025
  • q9j

Fair enough. I have the 44mm because it had a larger battery, but it only lasts about a day and a half at best (no AOD, wifi is off, location only on during workouts) if I wear it all the time. The only upside is that it shows notifications and I can...

Well the thing is I also want a watch that can detect my heartbeat, health thing, sleep score and more.

  • Someone
  • 03 Sep 2025
  • q9j

If you just want to use the watch to tell time, why not just get an actual watch? It you want an analog watch, check out Seiko, Casio, Tissot, or Citizen. If you want digital, get a G-Shock

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