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General Information
Model Name
Galaxy Watch 4 Classic (42mm)
Galaxy Watch (42mm)
Model type
Wearable
Wearable
Colors
Silver ()Black ()
Black (Midnight Black)Rose Gold (Rose Gold)
Announced
2021, August
2018, August
Released
2021, August
2018, August
Physical specifications
Dimensions
Watch: 41.5 x 41.5 x 11.2 mm
Watch: 41.9 x 45.7 x 12.7 mm
Weights
46.5g
49g
IP rating
5ATM + IP68 / MIL-STD-810G
5ATM + IP68 / MIL-STD-810G
Operating system
Operating system
Wear OS
Tizen Based Wearable OS 4.0
One UI version
Watch 3.0
Networks
Networks
4G
3G4G
eSIM support
Yes
Yes
Display
Kind
Main Display
Technology
Circular Super AMOLED
Circular Super AMOLED
Size
1.2 inch / 30.4 mm
1.2 inch / 30.48 mm
Resolution
/ 396x396 pixels
/ 360x360 pixels
Pixel density
330 PPI
278 PPI
Processors
Memory
RAM/ROM sizes
1.5 GB RAM with 16 GB ROM
768 MB RAM with 4 GB ROM1.5 GB RAM with 4 GB ROM
External memory support
No
Sensors
Accelerometer
Yes
Yes
Ambient Light
No
Yes
Barometer
Yes
Yes
Bioelectrical Impedance Analysis
Yes
No
Electrical Heart sensor
Yes
No
Gyro sensor
Yes
Yes
HRM
No
Yes
Light Sensor
Yes
No
Optical Heart Rate sensor
Yes
No
Video
External memory support
No
Connectivity
Location technology
BeiDouGPSGlonassGalileo
GPSGlonass
Wi-Fi
Yes
Yes
NFC
Yes
Yes
Bluetooth Version
5.0
4.2
Battery
Standard battery capacity
247mAh
270mAh
Removable battery
No
No
Wireless fast charging
Yes