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Compare Samsung Galaxy Watch 4 40mm

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Dimensions:40.4 x 39.3 x 9.8 mm40.4 x 40.4 x 9.7 mm42.7 x 40.4 x 8.6 mm38.8 x 40.4 x 9 mm40.4 x 42.7 x 8.6 mm
Weight:25.9 grams28.9 grams31.5 grams28.7 grams30 grams
Stand-by:depends on usagedepends on usagedepends on usagedepends on usagedepends on usage
Talk time:depends on usagedepends on usagedepends on usagedepends on usagedepends on usage
Announced:11 august 202110 july 202422 july 202626 july 20239 july 2025

Design type

Watch:

Controls

Directional key:
Touchscreen:CapacitiveCapacitiveCapacitiveCapacitiveCapacitive
Voice command:

Operating system

Wear OS:5.07.04.06.0
Security updates (years):5

User interface

One UI Watch:6.09.05.08.0

Display

Color display:Adjustable display brightness, 16.777.216 colors (24 bits), Circular Super AMOLED, Always On featureAdjustable display brightness, 16.777.216 colors (24 bits), Circular Super AMOLED, Always On featureAdjustable display brightness, 16.777.216 colors (24 bits), Circular Super AMOLED, Always On featureAdjustable display brightness, 16.777.216 colors (24 bits), Circular Super AMOLED, Always On featureAdjustable display brightness, 16.777.216 colors (24 bits), Circular Super AMOLED, Always On feature
Resolution:396 x 396 pixels432 x 432 pixels438 x 438 pixels432 x 432 pixels438 x 438 pixels
Size:1.2 inch1.3 inch1.34 inch1.3 inch1.34 inch
Aspect ratio:1:11:11:11:11:1
Pixels Per Inch (PPI):467470462470462
Screen-to-body ratio:29.3%33.4%33.6%34.8%33.6%
Peak brightness:3000 nits

Hardware

Integrated antenna:
Processor:Samsung Exynos W920, Dual CoreSamsung Exynos W1000, Dual CoreQualcomm Snapdragon Wear Elite 6100, penta coreSamsung Exynos W930, Dual CoreSamsung Exynos W1000, Dual Core
Clock Frequency:1.18 GHz1.95 GHz + 2.1 GHz1.4 GHz

Materials

Aluminium:
Dust and waterproof:IP68, 5 ATMIP6X, 5 ATMIP68, 5 ATMIP68, 5 ATMIP68, 5 ATM
Gorilla Glass:DX+
Rugged housing:MIL-STD-810GMIL-STD-810HMIL-STD-810HMIL-STD-810HMIL-STD-810H
Sapphire Crystal:

Personal Information
Management (PIM)

Agenda:
Alarm clock:
Date and time notation:
Stopwatch & countdown timer:

Available applications

Pedometer:

Messaging

E-mail:
Instant messaging:
MMS:
SMS:

Navigation

A-GPS:
Beidou:
Galileo:
GLONASS:
GPS receiver:
Digital Compass:

Build-in memory

Internal memory:
Size (RAM):1.5 GB2 GB2 GB2 GB2 GB
Storage:16 GB32 GB32 GB16 GB32 GB

Connectivity

Bluetooth:v5.0v5.3v6.0v5.3v5.3
NFC:
Wireless Lan (WLAN/Wi-Fi):Wi-Fi 4 (802.11n)Wi-Fi 4 (802.11n)Wi-Fi 4 (802.11n)Wi-Fi 4 (802.11n)Wi-Fi 4 (802.11n)

Power supply

Battery:Li-ionLi-ion
Capacity:247 mAh300 mAh390 mAh300 mAh325 mAh
Wireless charging:

Sensors

Ambient light sensor:
Barometer:
Gesture recognition:
Gyroscope:
Heart rate monitor:
Oxygen saturation (SpO2):
Thermometer:
Skin temperature sensor:

Compatibility

With Android:Vanaf 6.0From 11.0Vanaf 13.0From 10.0From 11.0

Telephony

Vibrating alert:

Personalisation

Multiple homescreens:
Widgets:

AI (Artificial intelligence)

Google Gemini:
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