Apple Watch Series 2 Aluminum 38mm vs Oppo A31 (2015)
Apple Watch Series 2 Aluminum 38mm
Oppo A31 (2015)
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Network
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2G networkN/AGSM 850, 900, 1800, 1900
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3G network-TD-SCDMA 1880, 2010
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LTE speed-LTE, Cat4, 150 Mbps download, 50 Mbps upload
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GPRSNoYes
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EDGENoYes
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Availability
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Oficially announced2016-122015-4
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Status2015
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Design
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BuildAluminum/Ceramic back-
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SIMNoDual SIM (Nano-SIM/ Micro-SIM, dual stand-by)
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Height38.6 mm131.9 mm
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Width33.3 mm65.5 mm
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Thickness11.4 mm8 mm
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Weight28.2 g135 g
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Waterproof50m-
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ColorsCase colors: silver, black; Band types: sport, blue, gold, gray; Band colors: gray, pink, rose gold, white, woven nylon, yellowBlue, White
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Display
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Display typeAMOLED capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size1.5 inches4.5 inches
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Resolution340 x 272 pixels480 x 854 pixels
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Pixel density290 ppi218 ppi
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Display colors1677721616777216
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ProtectionIon-X strengthened glass-
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MultitouchYes-
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Display features3D Touch display, 1000 nits-
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Hardware
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CPUDual-core 780 MHz ARM Cortex-A7Quad-core ARM Cortex-A53
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ChipsetApple S2Qualcomm MSM8916 Snapdragon 410
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GPUPowerVR G6200Adreno 306
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Memory RAM512 MB1 GB
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Internal storage8 GB8 GB
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Memory cardmicroSD
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Memory card max-128 GB
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OS
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OSwatchOS 3.0Android OS, v4.4 (KitKat)
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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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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi
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USBmicroUSB 2.0
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Bluetoothv4.0v4.0
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Bluetooth A2DPYes-
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NFCYes-
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GPSYesYes, with A-GPS
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GLONASSYes-
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Features
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Messaging SMSSMS(threaded view)SMS(threaded view)
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Messaging MMS-MMS
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Messaging EmailEmailEmail
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Messaging IMIM-
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Messaging Push Email-Push Email
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Messaging Push MailPush Mail-
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JavaNoNo
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SensorsAccelerometer, gyro, heart rateAccelerometer, proximity
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Browser
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HTML-Yes
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BrowserNo-
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity273 mAh2000 mAh
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Battery removableNon-removable-
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Talk time-7 h
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Standby time18 h240 h
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Main camera
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Main camera8 MP
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Primary camera resolution-3264 x 2448 pixels
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Primary camera video-1080p@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
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Selfie camera
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Selfie camera5 MP