Digma Optima Prime 4 3G vs Xiaomi Mi Watch (China)
Digma Optima Prime 4 3G
Xiaomi Mi Watch (China)
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Network
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2G networkGSM 900, 1800GSM 850, 900, 1800, 1900
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3G networkHSDPA 1900HSDPA 850, 900, 1900
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4G network-LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 18(800), 19(800), 20(800), 26(850), 39(1900), 40(2300), 41(2500)
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GPRSYes-
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EDGEYes-
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Availability
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Oficially announced2018-42019-11
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Status2018-42019-11
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Design
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BuildPlastic-
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SIMDual SIM (Micro-SIM/Mini-SIM, dual stand-by)eSIM
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Height107.8 mm44.7 mm
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Width188 mm36.9 mm
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Thickness10 mm12.3 mm
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Weight270 g44 / 56 g
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ColorsBlackBlack, Silver
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Display
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Display typeTNSuper AMOLED capacitive touchscreen
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Physical size7 inches1.78 inches
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Resolution1024 x 600 pixels368 x 448 pixels
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Pixel density170 ppi326 ppi
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Display colors1677721616777216
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MultitouchYes-
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Hardware
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CPUQuad-core 1.2 GHz Cortex-A7Quad-core 1.2 GHz Cortex-A7
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ChipsetSpreadtrum SC7731CQualcomm Snapdragon Wear 3100
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GPUMali-400 MP1Adreno 304
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Memory RAM1 GB1 GB
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Internal storage8 GB8 GB
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Memory cardmicroSD, microSDHC, microSDXCNo
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Memory card max64 GB-
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OS
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OSAndroid 7.0 NougatProprietary wearable platform
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Selfie camera
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Selfie camera0.31 MP
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Selfie camera resolution640 x 480 pixels-
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Selfie camera video480p@30fps MP-
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes
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EarpieceYes-
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Multimedia
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RadioFM RadioNo
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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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USBmicroUSB 2.0No
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Bluetoothv4.0v4.2
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Bluetooth A2DPYesYes
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bluetooth LE-Yes
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NFC-Yes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASS-Yes
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BDS-Yes
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Features
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SensorsAccelerometerAccelerometer, barometer, gyro, heart rate
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Browser
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HTMLHTML5-
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity2200 mAh570 / 590 mAh
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Battery removableNon-removableNon-removable
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Wireless charging-Yes
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Cost
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Price-170 USD
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