Apple Watch 40mm Series 4 vs Zoji Z9
Apple Watch 40mm Series 4
Zoji Z9
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPAW-CDMA 900, 2100
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4G networkLTELTE frequency band 1(2100), 3(1800), 7(2600), 18(800), 38(2600), 39(1900), 40(2300), 41(2500)
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LTE speed-LTE Cat 4, 301.5 Mbps download, 51 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2018-92018-7
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Status2018-92018-7
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Design
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BuildStainless Steel frame; all-ceramic/sapphire crystal back-
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SIMElectronic SIM card (Apple e-SIM)Dual SIM (Nano-SIM/microSD)
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Height40 mm163.5 mm
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Width34 mm79 mm
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Thickness10.7 mm14.5 mm
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Weight40 g180 g
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Waterproof50mIP68
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Dust proof-IP68
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ColorsBlack, Gold, SilverBlack, Orange
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Display
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Display typeLTPO AMOLEDIPS capacitive touchscreen
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Physical size1.57 inches5.7 inches
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Resolution394 x 324 pixels720 x 1440 pixels
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Pixel density326 ppi282 ppi
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Display colors1677721616777216
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ProtectionSapphire crystal glassScratch resistant, Corning Gorilla Glass, In-cell
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MultitouchYesYes
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Display features3D Touch display, 1000 nits-
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Hardware
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CPU-Octa-core
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CPUDual-coreQuad-core 2.0 GHz Cortex-A53
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CPU(second)quad-core 1.5 GHz Cortex-A53
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ChipsetApple S4MediaTek Helio P23 (MT6763V)
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GPUPowerVRMali-G71 MP2
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Internal storage16 GB64 GB
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Memory RAM-6 GB
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Memory card-microSD, microSDHC, microSDXC
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Memory card max-256 GB
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OS
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OSwatchOS 5.0Android 8.1 Oreo
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Main camera
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Camera type-Single
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Primary cameraNo-
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Main camera22 MP, f/2
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Primary camera resolution-5344 x 4008 pixels
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Primary camera video-1080p@30fps
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Primary camera flash-dual LED flash
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Camera features-Autofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode
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Sound
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3.5mm jackNoNo
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LoudspeakerYesYes
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NotificationsVibration; Ringtones-
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Earpiece-Yes
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Headphone adapter-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 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz
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WLAN WiFi Hotspot-Yes
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WLAN WiFi Dual Band-Yes
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USBNoType-C reversible connector
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USB On-The-Go-Yes
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Bluetoothv5.0v4.0
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Bluetooth A2DPYesYes
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bluetooth LEYes-
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NFCYesYes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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GALILEOYes-
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Beidou-Yes
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QZSSYes-
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Features
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SensorsAccelerometer, barometer, gyro (second gen), heart rateAccelerometer, fingerprint, proximity, light, Gyroscope, Heart rate
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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 capacity270 mAh5500 mAh
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Battery removableNon-removableNon-removable
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Fast battery charging-Yes
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Talk time 2G-29 h
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Talk time 3G-29 h
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Standby time18 h-
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Standby time 2G-480 h
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Standby time 3G-480 h
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Selfie camera
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Selfie camera13 MP
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Selfie camera resolution-4160 x 3120 pixels
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Selfie camera video-1080p@30fps