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    Galaxy Watch 4 (40mm) vs Galaxy Watch 4 Classic (42mm) vs Galaxy Watch 3 (41mm)

    General Information

    • Model Name

      Galaxy Watch 4 (40mm)

      Galaxy Watch 4 Classic (42mm)

      Galaxy Watch 3 (41mm)

    • Model type

      Wearable

      Wearable

      Wearable

    • Colors

      Silver ()
      Black ()
      Pink Gold ()

      Silver ()
      Black ()

      Silver (Mystic Silver)
      Bronze (Mystic Bronze)

    • Announced

      2021, August

      2021, August

      2020, July

    • Released

      2021, August

      2021, August

      2020, August

    Physical specifications

    • Dimensions

      Watch: 40.4 x 39.3 x 9.8 mm

      Watch: 41.5 x 41.5 x 11.2 mm

      Watch: 42.5 x 41.0 x 11.3 mm

    • Weights

      25.9g

      46.5g

      48.2g

    • IP rating

      5ATM + IP68 / MIL-STD-810G

      5ATM + IP68 / MIL-STD-810G

      5ATM + IP68 / MIL-STD-810G

    Operating system

    • Operating system

      Wear OS

      Wear OS

      Tizen Based Wearable OS 5.5

    • One UI version

      Watch 3.0

      Watch 3.0

    Networks

    • Networks

      4G

      4G

      4G

    • eSIM support

      Yes

      Yes

      Yes

    Display

    • Kind

      Main Display

    • Technology

      Circular Super AMOLED

      Circular Super AMOLED

      Circular Super AMOLED

    • Size

      1.2 inch / 30.4 mm

      1.2 inch / 30.4 mm

      1.2 inch / 30.2 mm

    • Resolution

      / 396x396 pixels

      / 396x396 pixels

      / 360x360 pixels

    • Pixel density

      330 PPI

      330 PPI

    Processors

    Memory

    • RAM/ROM sizes

      1.5 GB RAM with 16 GB ROM

      1.5 GB RAM with 16 GB ROM

      1 GB RAM with 8 GB ROM

    • External memory support

      No

      No

    Sensors

    • Accelerometer

      Yes

      Yes

      Yes

    • Barometer

      Yes

      Yes

      Yes

    • Bioelectrical Impedance Analysis

      Yes

      Yes

      No

    • Electrical Heart sensor

      Yes

      Yes

      Yes

    • Gyro sensor

      Yes

      Yes

      Yes

    • Light Sensor

      Yes

      Yes

      Yes

    • Optical Heart Rate sensor

      Yes

      Yes

      Yes

    Video

    • External memory support

      No

      No

    Connectivity

    • Location technology

      BeiDou
      GPS
      Glonass
      Galileo

      BeiDou
      GPS
      Glonass
      Galileo

      BeiDou
      GPS
      Glonass
      Galileo

    • Wi-Fi

      Yes

      Yes

      Yes

    • NFC

      Yes

      Yes

      Yes

    • Bluetooth Version

      5.0

      5.0

      5.0

    Battery

    • Standard battery capacity

      247mAh

      247mAh

      247mAh

    • Removable battery

      No

      No

      No

    • Wireless fast charging

      Yes

      Yes

      Yes