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Oppo A91
Compare Oppo A91 and Xiaomi Redmi Watch 2

Oppo A91 vs Xiaomi Redmi Watch 2

Oppo A91
Oppo A91
Xiaomi Redmi Watch 2
Xiaomi Redmi Watch 2
Oppo A91
Xiaomi Redmi Watch 2
  • Network
  • 2G network
    GSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMA
    N/A
  • 3G network
    HSDPA 850, 1700(AWS), 1900, 2100
    N/A
  • 4G network
    LTE frequency band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
    N/A
  • HSDPA speed
    42.2 Mbps
    -
  • HSUPA speed
    11.5 Mbps
    -
  • LTE speed
    LTE-A
    -
  • GPRS
    Yes
    -
  • EDGE
    Yes
    -
  • Availability
  • Oficially announced
    2019-12
    2021-10
  • Status
    2019-12
    2021-11
  • Design
  • Build
    Aluminium alloy, glass
    Plastic back, plastic frame
  • SIM
    Dual SIM (Nano-SIM, dual stand-by)
    No
  • Height
    160.2 mm
    39.1 mm
  • Width
    73.3 mm
    34.4 mm
  • Thickness
    7.9 mm
    10 mm
  • Weight
    172 g
    31 g
  • Waterproof
    -
    5ATM (up to 50 meters)
  • Colors
    Dark blue, Blue, Red
    Black, Blue, Ivory
  • Display
  • Display type
    AMOLED capacitive touchscreen
    AMOLED
  • Physical size
    6.4 inches
    1.6 inches
  • Resolution
    1080 x 2400 pixels
    360 x 320 pixels
  • Pixel density
    411 ppi
    301 ppi
  • Display colors
    16777216
    -
  • Protection
    Scratch resistant
    -
  • Multitouch
    Yes
    -
  • Hardware
  • CPU
    Octa-core
    -
  • CPU
    Quad-core 2.1 GHz Cortex-A73
  • CPU(second)
    quad-core 2.0 GHz Cortex-A53
  • Chipset
    Mediatek MT6771V Helio P70
    -
  • GPU
    Mali-G72 MP3
    -
  • Memory RAM
    8 GB
    -
  • Internal storage
    128 GB
    -
  • Memory card
    microSD, microSDHC, microSDXC
    No
  • Memory card max
    256 GB
    -
  • OS
  • OS
    ColorOS 6.1 (Android 9.0 Pie)
    Proprietary OS
  • Main camera
  • Camera type
    Quad
    -
  • Main camera
    48 MP, f/1.8 , 26 mm, 1/2.0" , 0.8 µm
  • 8 MP, f/2.2 , 13 mm, 1/4.0" , 1.12 µm
  • 2 MP, f/2.4 , 1/5" , 1.75 µm
  • 2 MP, f/2.4 , 1/5" , 1.75 µm
  • Primary camera resolution
    8000 x 6000 pixels
    -
  • Primary camera video
    2160p@30fps
    -
  • Primary camera flash
    LED flash
    -
  • Camera features
    Autofocus, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro mode, phase detection autofocus
    -
  • Selfie camera
  • Selfie camera
    16 MP, f/2 , 26 mm, 1/3.1" , 1.0 µm
  • Selfie camera resolution
    4608 x 3456 pixels
    -
  • Selfie camera video
    1080p@30fps
    -
  • Sound
  • 3.5mm jack
    Yes
    No
  • Loudspeaker
    Yes
    No
  • Earpiece
    Yes
    -
  • Multimedia
  • Radio
    FM Radio
    No
  • Connectivity
  • WLAN
    Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
    No
  • WLAN WiFi Hotspot
    Yes
    -
  • WLAN WiFi Direct
    Yes
    -
  • Wi-Fi display
    Yes
    -
  • WLAN WiFi Dual Band
    Yes
    -
  • USB
    Type-C 1.0 reversible connector
    No
  • USB On-The-Go
    Yes
    -
  • Bluetooth
    v5.0
    v5.2
  • Bluetooth A2DP
    Yes
    Yes
  • bluetooth LE
    Yes
    Yes
  • NFC
    -
    Yes
  • GPS
    Yes, with A-GPS
    Yes, with A-GPS
  • GLONASS
    Yes
    Yes
  • GALILEO
    -
    Yes
  • Beidou
    Yes
    -
  • BDS
    -
    Yes
  • Features
  • Sensors
    Accelerometer, compass, fingerprint, gyroscope, proximity, light
    Accelerometer, compass, heart rate, SpO2
  • Browser
  • HTML
    HTML5
    -
  • Battery
  • Battery type
    Li-Po
    Li-Ion
  • Battery capacity
    4025 mAh
    230 mAh
  • Battery removable
    Non-removable
    Non-removable
  • Fast battery charging
    VOOC Flash Charge 4.0 (50% in 30 min)
    -
  • Cost
  • Price
    290 USD
    60 USD

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