Apple Watch Series 7 Aluminum 45mm Cellular vs Xiaomi Redmi Watch 4
Apple Watch Series 7 Aluminum 45mm Cellular
Xiaomi Redmi Watch 4
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Network
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2G networkGSM 850, 900, 1800, 1900N/A
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3G networkHSDPA 850, 900, 1700(AWS), 1900, 2100N/A
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4G networkLTE frequency band 1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 25, 26, 28, 39, 40, 41, 66N/A
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Availability
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Oficially announced2021-092023-12
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Status2021-102023-12
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Design
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BuildGlass front, ceramic/sapphire crystal back, aluminum framePlastic back, plastic frame
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SIMeSIMNo
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Height45 mm47.6 mm
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Width38 mm41.1 mm
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Thickness10.7 mm10.5 mm
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Weight38.8 g31.5 g
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WaterproofIP6X (50m)5ATM (up to 50 meters)
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Dust proofIP6X-
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ColorsBlue, Green, Midnight, Red, StarlightBlack, White
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Display
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Display typeRetina LTPO OLEDAMOLED
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Physical size1.9 inches1.97 inches
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Resolution484 x 396 pixels450 x 390 pixels
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Pixel density326 ppi302 ppi
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ProtectionIon-X strengthened glass-
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Display featuresAlways-on display, 1000 nits (peak)Always-on display
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Hardware
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CPUDual-core
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ChipsetApple S7-
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GPUPowerVR-
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Internal storage32 GB-
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Memory card-No
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OS
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OSwatchOS 8.0, upgradable to 8.1HyperOS
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Main camera
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Primary cameraNo-
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Sound
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3.5mm jackNoNo
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LoudspeakerYesNo
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Multimedia
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RadioNoNo
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nNo
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WLAN WiFi Dual BandYes-
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USBNoNo
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Bluetoothv5.0v5.3
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Bluetooth A2DPA2DPYes
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bluetooth LELEYes
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NFCYesYes (market dependent)
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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GALILEOYesYes
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BDSYesYes
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QZSSYesYes
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Features
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SensorsAccelerometer, always-on altimeter, barometer, compass, gyro, heart rate, SpO2, VO2maxAccelerometer, compass, heart rate, gyroscope, SpO2
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Browser
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HTMLNo-
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity309 mAh470 mAh
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Battery removableNon-removableNon-removable
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Wireless chargingYes-
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SAR value
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SAR(head)0.96 W/kg-
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SAR EU(head)0.55 W/kg-
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SAR EU(body)0.50 W/kg-
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Cost
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Price500 USD75 USD
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