Apple Watch Series 2 38mm vs Bravis NB871 4G
Apple Watch Series 2 38mm
Bravis NB871 4G
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Network
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2G networkN/AGSM 850, 900, 1800, 1900
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3G network-HSDPA 900, 2100
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4G network-LTE frequency band 1(2100), 3(1800), 7(2600)
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HSDPA speed-21 Mbps
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HSUPA speed-5.76 Mbps
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LTE speed-LTE Cat4, 150.8 Mbps download, 51.0 Mbps upload
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GPRSNoYes
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EDGENo-
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Availability
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Oficially announced2016-92018-10
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Status-2018-10
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Design
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BuildStainless Steel/Ceramic backPlastic
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SIMNoDual SIM (dual stand-by)
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Height38.6 mm122.8 mm
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Width33.3 mm206.5 mm
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Thickness11.4 mm7.7 mm
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Weight41.9 g332 g
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Waterproof50m-
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ColorsSport band: silver case/white, black case/black; Leather band: silver case/blue, brown, gray, red; Stainless Steel band: silver case/silver, black case/blackBlack
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Display
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Display typeAMOLED capacitive touchscreenIPS capacitive touchscreen
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Physical size1.5 inches8 inches
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Resolution340 x 272 pixels1280 x 800 pixels
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Pixel density290 ppi189 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 1.3 GHz Cortex-A53
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ChipsetApple S2Mediatek MT8735
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GPU-Mali-T720 MP2
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Internal storage-16 GB
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Memory RAM-1 GB
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Memory cardNomicroSD, microSDHC, microSDXC
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Memory card max-32 GB
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OS
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OSwatchOS 3.0Android 8.1 Oreo
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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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USBNomicroUSB 2.0
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USB On-The-Go-Yes
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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-Ion
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Battery capacity-4000 mAh
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Battery removableNon-removableNon-removable
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Main camera
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Camera type-Single
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Main camera2 MP
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Primary camera resolution-1600 x 1200 pixels
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Primary camera video-720p@30fps
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Primary camera flash-LED flash
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Camera features-Continuous shooting, digital zoom, geotagging, panorama, HDR, face detection, white balance settings, ISO settings, self-timer
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Selfie camera
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Selfie camera0.3 MP
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Selfie camera resolution-640 x 480 pixels
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Selfie camera video-480p@30fps
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