Lava Z91 vs Samsung Galaxy Watch 42mm
Lava Z91
Samsung Galaxy Watch 42mm
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Network
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2G networkGSM 900, 1800GSM 850, 900, 1800, 1900
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3G networkHSDPA 900, 2100HSDPA 900, 2100
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4G networkLTE frequency band 1(2100), 3(1800), 5(850), 40(2300), 41(2500)LTE
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HSDPA speed42.2 Mbps-
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HSUPA speed5.76 Mbps-
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LTE speedLTE, Cat4, 150 Mbps download, 50 Mbps upload-
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2018-32018-8
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Status2018-32018-8
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Design
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BuildPlastic, metalStainless Steel 316L
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SIMDual SIM (Nano-SIM, dual stand-by)Electronic SIM card (e-SIM)
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Height152 mm45.7 mm
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Width72.9 mm41.9 mm
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Thickness7.7 mm12.7 mm
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Weight147 g49 g
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Payment-Samsung Pay
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Waterproof-IP68, 50m
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MIL-STD-810G-Yes
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ColorsBlueBlack, Gold; Straps - Black, Grey, Red, Yellow, Purple, Beige, Grey, Brown
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Display
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Display typeIPS LCD capacitive touchscreenSuper AMOLED
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Physical size5.7 inches1.2 inches
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Resolution720 x 1440 pixels360 x 360 pixels
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Pixel density282 ppi278 ppi
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Display colors1677721616777216
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Protection2.5D curved glass screenCorning Gorilla Glass DX+
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MultitouchYes, max 5 fingersYes
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Display features-Rotating bezel, Always-on display
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Hardware
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CPUQuad-core 1.3 GHz ARM Cortex-A53Dual-core 1.15 GHz
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ChipsetMediatek MT6739Exynos 9110
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GPUPowerVR GE8100-
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Memory RAM3 GB4 GB
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Internal storage32 GB0.75, 1.5 GB
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Memory cardmicroSD-
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Memory card max128 GB-
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OS
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OSAndroid 7.1 (Nougat)Tizen-based wearable OS 4.0
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Main camera
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Main camera13 MP, f/2.0 , 1.12 µm
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Primary camera-No
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Primary camera resolution4160 x 3120 pixels-
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Primary camera video1080p@30fps-
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Primary camera Autofocusautofocus-
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Camera featuresGeo-tagging, face detection, touch focus-
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Selfie camera
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FlashLED flash-
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Selfie camera8 MP, f/2.2
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Selfie camera resolution3264 x 2448 pixels-
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes
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NotificationsVibration; MP3, WAV ringtonesVibration; MP3, WAV ringtones
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EarpieceYes-
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Multimedia
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Radio-No
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Radio FMFM radio-
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11acWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYes-
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WLAN WiFi DirectYes-
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WLAN WiFi Dual BandYes-
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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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Features
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Messaging SMSSMS(threaded view)-
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Messaging MMSMMS-
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Messaging EmailEmail-
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Messaging IMIM-
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SensorsFingerprint (rear-mounted), accelerometer, proximityAccelerometer, barometer, gyro, heart rate
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Browser
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HTMLYesNo
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity3000 mAh270 mAh
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Battery removableNon-removableNon-removable
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Wireless charging-WPC
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Standby time-72 h