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Apple Watch 40mm Series 4
Compare Apple Watch 40mm Series 4 and Xiaomi Redmi 4a

Apple Watch 40mm Series 4 vs Xiaomi Redmi 4a

Apple Watch 40mm Series 4
Apple Watch 40mm Series 4
Xiaomi Redmi 4a
Xiaomi Redmi 4a
Apple Watch 40mm Series 4
Xiaomi Redmi 4a
  • Network
  • 2G network
    GSM 850, 900, 1800, 1900
    GSM 850, 900, 1800, 1900; CDMA 800, 1900
  • 3G network
    HSDPA
    HSDPA 850, 900, 1900, 2100; CDMA2000 1xEV-DO & TD-SCDMA
  • 4G network
    LTE
    LTE frequency band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500)
  • HSPA speed
    -
    HSPA
  • LTE speed
    -
    LTE
  • GPRS
    Yes
    Yes
  • EDGE
    Yes
    Yes
  • Availability
  • Oficially announced
    2018-9
    2016-11
  • Status
    2018-9
    2016-11
  • Design
  • Build
    Stainless Steel frame; all-ceramic/sapphire crystal back
    -
  • SIM
    Electronic SIM card (Apple e-SIM)
    Dual SIM
  • Height
    40 mm
    139.5 mm
  • Width
    34 mm
    70.4 mm
  • Thickness
    10.7 mm
    8.5 mm
  • Weight
    40 g
    131.5 g
  • Waterproof
    50m
    -
  • Colors
    Black, Gold, Silver
    Gold, Rose Gold
  • Display
  • Display type
    LTPO AMOLED
    IPS LCD capacitive touchscreen
  • Physical size
    1.57 inches
    5.0 inches
  • Resolution
    394 x 324 pixels
    720 x 1280 pixels
  • Pixel density
    326 ppi
    294 ppi
  • Display colors
    16777216
    16777216
  • Protection
    Sapphire crystal glass
    -
  • Multitouch
    Yes
    Yes
  • Display features
    3D Touch display, 1000 nits
    -
  • Hardware
  • CPU
    Dual-core
    Quad-core 1.4 GHz ARM Cortex-A53
  • Chipset
    Apple S4
    Qualcomm MSM8917 Snapdragon 425
  • GPU
    PowerVR
    Adreno 308
  • Internal storage
    16 GB
    16 GB
  • Memory RAM
    -
    2 GB
  • Memory card
    -
    microSD(uses second SIM slot)
  • Memory card max
    -
    256 GB
  • OS
  • OS
    watchOS 5.0
    Android OS, v6.0.1 (Marshmallow)
  • Main camera
  • Primary camera
    No
    -
  • Main camera
    13 MP, f/2.2
  • Primary camera video
    -
    1080p@30fps
  • Primary camera Autofocus
    -
    autofocus
  • Primary camera flash
    -
    LED flash
  • Camera features
    -
    Geo-tagging, HDR, face/smile detection, panorama, touch focus
  • Sound
  • 3.5mm jack
    No
    Yes
  • Loudspeaker
    Yes
    Yes
  • Notifications
    Vibration; Ringtones
    Vibration; MP3, WAV ringtones
  • Multimedia
  • Radio
    No
    -
  • Radio FM
    -
    FM radio
  • Connectivity
  • WLAN
    Wi-Fi 802.11b, 802.11g, 802.11n
    Wi-Fi 802.11b, 802.11g, 802.11n
  • WLAN WiFi Hotspot
    -
    Yes
  • WLAN WiFi Direct
    -
    Yes
  • USB
    No
    microUSB 2.0
  • Bluetooth
    v5.0
    v4.1
  • Bluetooth A2DP
    Yes
    Yes
  • bluetooth LE
    Yes
    Yes
  • Infrared
    -
    Yes
  • NFC
    Yes
    -
  • GPS
    Yes, with A-GPS
    Yes, with A-GPS
  • GLONASS
    Yes
    Yes
  • GALILEO
    Yes
    -
  • BDS
    -
    Yes
  • QZSS
    Yes
    -
  • Features
  • Messaging SMS
    -
    SMS(threaded view)
  • Messaging MMS
    -
    MMS
  • Messaging Email
    -
    Email
  • Messaging IM
    -
    IM
  • Messaging Push Mail
    -
    Push Mail
  • Java
    -
    No
  • Sensors
    Accelerometer, barometer, gyro (second gen), heart rate
    Accelerometer, compass, gyro, proximity
  • Browser
  • HTML
    No
    HTML5
  • Battery
  • Battery type
    Li-Ion
    Li-Ion
  • Battery capacity
    270 mAh
    3120 mAh
  • Battery removable
    Non-removable
    Non-removable
  • Standby time
    18 h
    -
  • Selfie camera
  • Selfie camera
    5 MP, f/2.2

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