Apple Watch 38mm (1st gen) vs Apple Watch 44mm Series 4
Apple Watch 38mm (1st gen)
Apple Watch 44mm Series 4
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Network
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2G networkN/AGSM 850, 900, 1800, 1900
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3G network-HSDPA
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4G network-LTE
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GPRSYes
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EDGEYes
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Availability
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Oficially announced2014-92018-9
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Status2015-52018-9
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Design
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BuildStainless Steel/Ceramic backStainless Steel frame; all-ceramic/sapphire crystal back
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SIMNoElectronic SIM card (Apple e-SIM)
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Height38.6 mm44 mm
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Width33.3 mm38 mm
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Thickness10.5 mm10.7 mm
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Weight40 g48 g
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WaterproofIPX7 certified, 1 m and 30 minutes50m
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ColorsBlack Link Bracelet, Blue/Stone Leather Loop, Brown/Black/Blue/Red/Marigold/Jay Buckle, Link Bracelet, Pearl Woven Nylon, Silver/Space Black Milanese Loop, Space Black Stainless Steel/Black, Stainless Steel/Red, WhiteBlack, Gold, Silver
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Display
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Display typeAMOLED capacitive touchscreenLTPO AMOLED
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Physical size1.5 inches1.78 inches
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Resolution340 x 272 pixels448 x 368 pixels
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Pixel density290 ppi326 ppi
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Display colors1677721616777216
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ProtectionSapphire crystal glassSapphire crystal glass
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MultitouchYesYes
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Display features3D Touch display, 450 nits3D Touch display, 1000 nits
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Hardware
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CPU520 MHz ARM Cortex-A7Dual-core
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ChipsetApple S1Apple S4
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GPUPowerVR SGX543PowerVR
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Memory RAM512 MB-
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Internal storage8 GB16 GB
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Memory card-
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OS
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OSwatchOS 1.0watchOS 5.0
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Sound
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3.5mm jackNoNo
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LoudspeakerYesYes
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NotificationsVibration; RingtonesVibration; Ringtones
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Multimedia
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RadioNoNo
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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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USBNo
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Bluetoothv4.0v5.0
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Bluetooth A2DP-Yes
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bluetooth LEYesYes
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NFCYesYes
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GPSNoYes, with A-GPS
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GLONASS-Yes
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GALILEO-Yes
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QZSS-Yes
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Features
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Messaging SMSSMS(threaded view)-
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Messaging EmailEmail-
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Messaging IMIM-
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Messaging Push MailPush Mail-
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JavaNo-
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SensorsAccelerometer, gyro, heart rateAccelerometer, barometer, gyro (second gen), heart rate
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Browser
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HTML-No
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BrowserNo-
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity205 mAh-
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Battery removableNon-removableNon-removable
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Standby time18 h18 h
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Main camera
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Primary camera-No