Apple Watch Sport Series 2 38mm vs Celkon C51
Apple Watch Sport Series 2 38mm
Celkon C51
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Network
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2G networkGSM 900, 1800
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GPRS
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EDGE
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Availability
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Oficially announced2016-122014-12
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Status
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Design
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BuildAluminum/Ceramic back-
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SIMNoDual SIM
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Height38.6 mm
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Width33.3 mm
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Thickness11.4 mm
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Weight28.2 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, yellowBlack, Brown, Champagne
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Display
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Display typeAMOLED capacitive touchscreenTFT
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Physical size1.5 inches2.4 inches
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Resolution340 x 272 pixels240 x 320 pixels
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Pixel density290 ppi167 ppi
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Display colors16777216-
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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-A7
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ChipsetApple S2-
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GPUPowerVR G6200-
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Memory RAM512 MB-
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Internal storage8 GB-
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Memory cardmicroSD
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Memory card max-8 GB
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OS
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OSwatchOS 3.0-
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Sound
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3.5mm jackNoYes
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LoudspeakerYesYes
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NotificationsVibration; RingtonesVibration, Polyphonic, MP3 ringtones
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Multimedia
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RadioNo-
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Radio FM-FM radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11n
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USBYes
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Bluetoothv4.0Yes
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Bluetooth A2DPYes-
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NFCYes-
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GPSYesNo
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GLONASSYes-
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Features
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Messaging SMSSMS(threaded view)SMS
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Messaging EmailEmail-
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Messaging IMIM-
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Messaging Push MailPush Mail-
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JavaNoNo
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SensorsAccelerometer, gyro, heart rate-
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Browser
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BrowserNoNo
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity273 mAh1000 mAh
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Battery removableNon-removable-
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Talk time--
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Standby time18 h-
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Main camera
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Main camera1.3 MP
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Primary camera resolution-1280 x 1024 pixels
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Primary camera video-video
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Selfie camera
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Secondary camera-No
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