NIU C21A vs Samsung Gear 2
NIU C21A
Samsung Gear 2
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Network
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2G networkGSM 850, 900, 1800, 1900
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GPRSYes
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EDGE
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Availability
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Oficially announced2013-32014-4
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Status2013-42014-4
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Design
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SIMDual SIM (Mini-SIM)No
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Height106 mm58.4 mm
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Width45 mm36.9 mm
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Thickness14.5 mm10 mm
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Weight73 g68 g
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ColorsBlack, Blue, Fuchsia, Green, Purple, Red, WhiteCharcoal Black, Gold Brown, Wild Orange
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Display
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Display typeTFTSuper AMOLED capacitive touchscreen
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Physical size1.8 inches1.63 inches
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Resolution128 x 160 pixels320 x 320 pixels
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Pixel density114 ppi278 ppi
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Display colors26214416777216
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Hardware
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CPUDual-core 1.0 GHz
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Chipset-Exynos 3250
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Internal storage64 Mbit4 GB
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Memory RAM-512 MB
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Memory cardmicroSD
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Memory card max32 GB-
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Main camera
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Main camera2 MP
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Primary camera resolution640 x 480 pixels1600 x 1200 pixels
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Primary camera videono720p
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Primary camera Autofocus-autofocus
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Camera featuresNoYes
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Selfie camera
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Secondary cameraNoNo
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Sound
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3.5mm jackNoNo
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LoudspeakerYesYes
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NotificationsVibration, PolyphonicVibration; MP3, WAV ringtones
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Multimedia
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Radio-No
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Radio FMStereo FM radio-
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Connectivity
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WLAN
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USBYes
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Bluetoothv2.0v4.0
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bluetooth LE-Yes
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Infrared-Yes
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GPSNoNo
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Features
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Messaging SMSSMSSMS(threaded view)
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Messaging MMS-MMS
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Messaging Email-Email
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Messaging IMIMIM
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WAPYes-
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JavaNoNo
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Sensors-Accelerometer, gyro, heart rate
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity600 mAh300 mAh
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Battery removable-Non-removable
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Talk time4 h72 h
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Standby time200 h-
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OS
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OS-Tizen-based wearable platform
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Browser
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Browser-No
