Apple Watch Series 7 Aluminum 41mm vs BLU J2
Apple Watch Series 7 Aluminum 41mm
BLU J2
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Network
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2G networkN/AGSM 850, 900, 1800, 1900
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3G networkN/AHSDPA 850, 1900, 2100
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4G networkN/A-
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HSDPA speed-21.1 Mbps
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HSUPA speed-5.76 Mbps
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GPRS-Yes
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EDGE-Yes
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Availability
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Oficially announced2021-092019-12
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Status2021-102019-12
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Design
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BuildGlass front, ceramic/sapphire crystal back, aluminum framePlastic
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SIMNoDual SIM (Nano-SIM, dual stand-by)
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Height41 mm144 mm
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Width35 mm73.1 mm
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Thickness10.7 mm10.3 mm
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Weight32 g146 g
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WaterproofIP6X (50m)-
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Dust proofIP6X-
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ColorsBlue, Green, Midnight, Red, StarlightBlack, Blue, Brown
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Display
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Display typeRetina LTPO OLEDIPS LCD capacitive touchscreen
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Physical size1.69 inches5.0 inches
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Resolution430 x 352 pixels480 x 854 pixels
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Pixel density326 ppi196 ppi
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Display colors-16777216
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ProtectionIon-X strengthened glass-
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Multitouch-Yes
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Display featuresAlways-on display, 1000 nits (peak)-
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Hardware
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CPUDual-coreQuad-core 1.3 GHz Cortex-A7
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ChipsetApple S7-
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GPUPowerVRMali-400
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Internal storage32 GB32 GB
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Memory RAM-1 GB
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Memory card-microSD, microSDHC, microSDXC
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Memory card max-64 GB
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Storage-eMMC 5.1
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OS
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OSwatchOS 8.0, upgradable to 8.1Android 8.1 Oreo Go Edition
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Main camera
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Camera type-Single
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Primary cameraNo-
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Main camera5 MP
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Primary camera video-720p@30fps
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Primary camera flash-LED flash
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Sound
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3.5mm jackNoYes
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LoudspeakerYesYes
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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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WLAN WiFi Hotspot-Yes
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WLAN WiFi Direct-Yes
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WLAN WiFi Dual BandYes-
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USBNomicroUSB 2.0
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Bluetoothv5.0v4.1
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Bluetooth A2DPA2DPYes
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bluetooth LELEYes
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NFCYes-
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYes-
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GALILEOYes-
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BDSYes-
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QZSSYes-
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Features
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SensorsAccelerometer, always-on altimeter, barometer, compass, gyro, heart rate, SpO2, VO2maxAccelerometer
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Browser
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HTMLNoHTML5
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity284 mAh2000 mAh
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Battery removableNon-removableRemovable
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Wireless chargingYes-
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SAR value
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SAR(head)0.39 W/kg-
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SAR EU(head)0.26 W/kg-
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SAR EU(body)0.40 W/kg-
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Cost
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Price500 USD55 USD
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Selfie camera
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Selfie camera5 MP
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Selfie camera video-720p@30fps
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