Apple Watch Series 2 42mm vs Digma Optima Prime 4 3G
Apple Watch Series 2 42mm
Digma Optima Prime 4 3G
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Network
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2G networkN/AGSM 900, 1800
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3G network-HSDPA 1900
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GPRSNoYes
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EDGENoYes
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Availability
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Oficially announced2016-92018-4
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Status-2018-4
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Design
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BuildStainless Steel/Ceramic backPlastic
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SIMNoDual SIM (Micro-SIM/Mini-SIM, dual stand-by)
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Height42.5 mm107.8 mm
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Width36.4 mm188 mm
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Thickness11.4 mm10 mm
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Weight52.4 g270 g
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Waterproof50m-
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ColorsSport band: silver case/white, black case/black; Leather band: silver case/blue, brown, orange; Stainless Steel band: silver case/silver, black case/blackBlack
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Display
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Display typeAMOLED capacitive touchscreenTN
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Physical size1.65 inches7 inches
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Resolution390 x 312 pixels1024 x 600 pixels
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Pixel density303 ppi170 ppi
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Display colors1677721616777216
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ProtectionSapphire crystal glass-
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MultitouchYesYes
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Hardware
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CPUDual-coreQuad-core 1.2 GHz Cortex-A7
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ChipsetApple S2Spreadtrum SC7731C
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GPU-Mali-400 MP1
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Memory RAM-1 GB
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Internal storage-8 GB
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Memory cardNomicroSD, microSDHC, microSDXC
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Memory card max-64 GB
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OS
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OSwatchOS 3.0Android 7.0 Nougat
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Sound
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3.5mm jackNoYes
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LoudspeakerYesYes
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NotificationsVibration; Ringtones-
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Earpiece-Yes
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Multimedia
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RadioNoFM 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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USBmicroUSB 2.0
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Bluetoothv4.0v4.0
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Bluetooth A2DPYesYes
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NFCYes-
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GPSYesYes, with A-GPS
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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
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Browser
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HTML-HTML5
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BrowserNo-
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity-2200 mAh
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Battery removableNon-removableNon-removable
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Selfie camera
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Selfie camera0.31 MP
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Selfie camera resolution-640 x 480 pixels
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Selfie camera video-480p@30fps MP
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