Bravis NB851 vs Oppo Watch Stainless steel
Bravis NB851
Oppo Watch Stainless steel
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Network
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2G networkGSM 850, 900, 1800, 1900N/A
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3G networkHSDPA 900, 2100HSDPA 850, 900, 2100
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4G network-LTE frequency band 1(2100), 3(1800), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)
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HSDPA speed21 Mbps-
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HSUPA speed5.76 Mbps-
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GPRSYes-
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Availability
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Oficially announced2018-102020-03
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Status2018-102020-03
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Design
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BuildPlasticGlass front, stainless steel frame, ceramic/sapphire crystal back
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SIMDual SIM (dual stand-by)eSIM
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Height122.8 mm46 mm
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Width206.5 mm39 mm
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Thickness7.7 mm11.4 mm
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Weight332 g45.5 g
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Waterproof-5ATM
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ECG-ECG certified
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ColorsBlackSilver
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Display
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Display typeIPS capacitive touchscreenAMOLED flexible capacitive touchscreen
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Physical size8 inches1.91 inches
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Resolution1280 x 800 pixels402 x 476 pixels
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Pixel density189 ppi326 ppi
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Display colors1677721616777216
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MultitouchYes-
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Hardware
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CPUQuad-core 1.3 GHz Cortex-A7Quad-core 1.2 GHz Cortex-A7
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ChipsetMediatek MT8321Qualcomm MSM8909W Snapdragon Wear 2500
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GPUMali-400 MP2Adreno 304
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Memory RAM1 GB1 GB
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Internal storage16 GB8 GB
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Memory cardmicroSD, microSDHC, microSDXCNo
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Memory card max32 GB-
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Storage-eMMC 4.5
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OS
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OSAndroid 8.1 OreoColorOS Watch OS
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Main camera
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Camera typeSingle-
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Main camera2 MP
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Primary camera-No
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Primary camera resolution1600 x 1200 pixels-
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Primary camera video720p@30fps-
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Primary camera flashLED flash-
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Camera featuresContinuous 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 resolution640 x 480 pixels-
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Selfie camera video480p@30fps-
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes
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EarpieceYes-
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Multimedia
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RadioFM RadioNo
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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 2.0No
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Bluetoothv4.0v4.2
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Bluetooth A2DPYesYes
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bluetooth LE-Yes
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NFC-Yes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASS-Yes
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BDS-Yes
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Features
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SensorsAccelerometerAccelerometer, barometer, gyro, heart rate
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Browser
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HTMLHTML5-
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity4000 mAh430 mAh
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Battery removableNon-removableNon-removable
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Wireless charging-Yes
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Cost
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Price-450 USD
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