Apple Watch 40mm Series 4 Aluminum vs Cat S31
Apple Watch 40mm Series 4 Aluminum
Cat S31
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPAHSDPA 850, 900, 1900, 2100 - EU; HSDPA 850, 900, 1700(AWS), 1900, 2100 - USA
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4G networkLTELTE frequency band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800) - EU; LTE frequency band 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 12(700), 17(700) - USA
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LTE speed-LTE, Cat4, 150 Mbps download, 50 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2018-92017-9
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Status2018-92017-10
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Design
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BuildAluminum frame; all-ceramic/sapphire crystal back-
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SIMElectronic SIM card (Apple e-SIM)Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
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Height40 mm146 mm
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Width34 mm74.4 mm
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Thickness10.7 mm12.6 mm
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Weight30 g200 g
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Waterproof50mIP68, 1.2 m and 35 minutes
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Dust proof-IP68
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MIL-STD-810G-Yes - dust, humidity, rain, salt, vibration, solar radiation, transport and thermal shock resistant
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ColorsGray, Gold, SilverBlack
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Display
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Display typeLTPO AMOLEDTFT capacitive touchscreen
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Physical size1.57 inches4.7 inches
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Resolution394 x 324 pixels720 x 1280 pixels
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Pixel density326 ppi312 ppi
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Display colors16777216-
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ProtectionIon-X strengthened glassCorning Gorilla Glass 3
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MultitouchYesYes
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Display features3D Touch display, 1000 nits-
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Hardware
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CPUDual-coreQuad-core 1.3 GHz ARM Cortex-A7
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ChipsetApple S4Qualcomm MSM8909 Snapdragon 210
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GPUPowerVRAdreno 304
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Internal storage16 GB16 GB
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Memory RAM-2 GB
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Memory card-microSD
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Memory card max-64 GB
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OS
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OSwatchOS 5.0Android 7.0 (Nougat)
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Main camera
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Primary cameraNo-
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Main camera8 MP
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Primary camera video-720p@30fps
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Primary camera Autofocus-autofocus
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Primary camera flash-LED flash
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Camera features-Geo-tagging, face detection, touch focus
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Sound
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3.5mm jackNoYes
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LoudspeakerYesYes
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NotificationsVibration; RingtonesVibration; MP3, WAV ringtones
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Multimedia
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RadioNo-
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Radio FM-FM radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi Hotspot-Yes
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USBNomicroUSB 2.0
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USB On-The-Go-Yes
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Bluetoothv5.0v4.1
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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NFCYes-
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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GALILEOYes-
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BDS-Yes
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QZSSYes-
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Features
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Messaging SMS-SMS(threaded view)
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Messaging MMS-MMS
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Messaging Email-Email
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Messaging IM-IM
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Messaging Push Email-Push Email
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Java-No
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SensorsAccelerometer, barometer, gyro (second gen), heart rateAccelerometer, compass, proximity
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Browser
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HTMLNoHTML5
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity-4000 mAh
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Battery removableNon-removableNon-removable
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Standby time18 h-
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Selfie camera
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Selfie camera2 MP
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