Apple Watch 42mm vs Asus Zenfone 4 Pro ZS551KL
Apple Watch 42mm
Asus Zenfone 4 Pro ZS551KL
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Network
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2G networkGSM 850, 900, 1800, 1900
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3G network-HSDPA 800, 850, 900, 1700(AWS), 1800, 1900, 2100
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4G network-LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 17(700), 19(800), 20(800), 28(700), 38(2600), 39(1900), 40(2300), 41(2500) - Global, Taiwan; LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 20(800), 26(850), 28(700), 29(700), 30(2300), 38(2600), 39(1900), 41(2500) - US, Canada, Brazil; LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 20(800), 26(850), 28(700), 29(700), 30(2300), 38(2600), 39(1900), 40(2300), 41(2500) - India
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HSDPA speed-42.2 Mbps
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HSUPA speed-5.76 Mbps
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LTE-A speed-LTE-A, (3CA) Cat12, 600 Mbps download, 150 Mbps upload
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GPRSYes
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EDGEYes
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Availability
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Status2015-42017-10
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Oficially announced2014-92017-8
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Design
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BuildStainless Steel-
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SIMNoHybrid Dual SIM (Nano-SIM, dual stand-by)
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Height42 mm156.9 mm
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Width35.9 mm75.6 mm
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Thickness10.5 mm7.6 mm
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Weight50 g175 g
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ColorsBlack Link Bracelet, Blue/Stone Leather Loop, Black/Blue/Brown Buckle, Stainless Steel/Red, WhiteMoonlight white, Pure Black
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Display
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Display typeAMOLED capacitive touchscreenAMOLED capacitive touchscreen
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Physical size1.65 inches5.5 inches
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Resolution390 x 312 pixels1080 x 1920 pixels
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Pixel density303 ppi401 ppi
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Display colors1677721616777216
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Protection-Corning Gorilla Glass 5
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Multitouch-Yes, max 10 fingers
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Hardware
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CPU-Octa-core
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CPU520 MHz2.45 GHz Quad-core Kryo
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CPU(second)quad-core 1.9 GHz Kryo
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ChipsetApple S1Qualcomm MSM8998 Snapdragon 835
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GPUPowerVR SGX543Adreno 540
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Memory RAM512 MB6 GB
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Internal storage8 GB64, 128 GB
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Memory cardmicroSD(uses second SIM slot)
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Memory card max-256 GB
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OS
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OSwatchOS 1.0Android 7.1.1 (Nougat)
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Sound
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3.5mm jackNoYes
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LoudspeakerYesYes, dual speakers
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NotificationsVibration; RingtonesVibration; MP3, WAV 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, 802.11nWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
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WLAN WiFi Hotspot-Yes
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WLAN WiFi Direct-Yes
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WLAN WiFi Dual Band-Yes
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USBType-C reversible connector
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Bluetoothv4.0v5.0
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Bluetooth A2DP-Yes
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bluetooth LEYesYes
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Bluetooth EDR-Yes
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Bluetooth AptX-Yes
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Infrared-Yes
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NFC-Yes
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GPSNoYes, with A-GPS
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GLONASS-Yes
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GALILEO-Yes
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BDS-Yes
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Features
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Messaging SMSSMS(threaded view)SMS(threaded view)
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Messaging MMS-MMS
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Messaging EmailEmailEmail
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Messaging IMIMIM
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Messaging Push Email-Push Email
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Messaging Push MailPush Mail-
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JavaNoNo
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SensorsAccelerometer, gyro, heart rateFingerprint (front-mounted), accelerometer, color spectrum, compass, gyro, proximity
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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 capacity250 mAh3600 mAh
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Battery removableNon-removableNon-removable
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Fast battery charging-50% in 32 min
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Talk time3 h 40 min-
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Talk time 3G-27 h 30 min
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Standby time22 h-
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Main camera
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Camera type-Dual
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Main camera12 MP, f/1.7 , 25 mm, 2x optical zoom
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16 MP, 50 mm
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Primary camera video-2160p@30fps, 1080p@30/60fps, 1080p@120fps, 720p@240fps
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Primary camera Autofocus-laser/phase detection autofocus
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Primary camera flash-LED flash
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Primary camera optical image stabilization-4-axis optical image stabilization
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Camera features-25mm (1/2.55" sensor size, 1.4 µm pixel size), 50mm (1/3.1" sensor size, 1.0 µm pixel size), geo-tagging, touch focus, face detection, HDR, panorama
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Selfie camera
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Selfie camera8 MP, f/1.9 , 22 mm, 1.4 µm
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Selfie camera video-1080p
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