Samsung Galaxy Watch 4 40mm vs Xiaomi Watch S2 42mm
Samsung Galaxy Watch 4 40mm
Xiaomi Watch S2 42mm
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Network
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2G networkGSM 850, 900, 1800, 1900N/A
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3G networkHSDPA 850, 900, 2100N/A
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4G networkLTE frequency band 1, 3, 5, 7, 8, 20N/A
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GPRS-No
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EDGE-No
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Availability
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Oficially announced2021-082022-12
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Status2021-082022-12
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Design
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BuildGlass front (Gorilla Glass DX+), aluminum frameSapphire crystal front, stainless steel frame
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SIMeSIMNo
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Height39.3 mm42.3 mm
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Width40.4 mm42.3 mm
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Thickness9.8 mm10.2 mm
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Weight25.9 g-
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PaymentSamsung Pay-
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WaterproofIP68, 50m5ATM
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MIL-STD-810GYes-
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ColorsBlack, Pink Gold, SilverBlack, Gold
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Display
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Display typeSuper AMOLEDAMOLED
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Physical size1.2 inches1.32 inches
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Resolution396 x 396 pixels466 x 466 pixels
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Pixel density330 ppi326 ppi
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ProtectionCorning Gorilla Glass DX+-
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Display featuresAlways-on display-
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Hardware
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CPUDual-core 1.18 GHz Cortex-A55
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ChipsetExynos W920-
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GPUMali-G68-
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Memory RAM1.5 GB-
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Internal storage16 GB-
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Memory card-No
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StorageeMMC-
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OS
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OSAndroid Wear OS, One UI Watch 3Proprietary OS
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Main camera
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Primary cameraNo-
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Sound
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3.5mm jackNoNo
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LoudspeakerYesYes
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Multimedia
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RadioNoNo
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11nWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi Dual BandYes-
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USBNoNo
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Bluetoothv5.0v5.2
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Bluetooth A2DPA2DPA2DP
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bluetooth LELELE
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NFCYesYes
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GPSYes, with A-GPSYes
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GLONASSYesYes
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GALILEOYesYes
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BDSYesYes
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QZSS-Yes
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Features
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SensorsAccelerometer, barometer, gyro, heart rateAccelerometer, barometer, compass, gyro, heart rate, SpO2, thermometer (skin temperature), body composition
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Browser
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HTMLNo-
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity247 mAh305 mAh
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Battery removableNon-removableNon-removable
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Wireless chargingQiYes
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Cost
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Price320 USD130 USD
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