VIZIO M-Series™ Quantum 55” Class 4K HDR Smart TV | M556-G4
Size: 55"

VIZIO M-Series Quantum 55” Class 4K HDR Smart TV | M556-G4

VIZIO M-Series Quantum 55” Class 4K HDR Smart TV | M556-G4

$449.99 Plus tax and shipping

Top Reasons to Choose M-Series™ Quantum.

  1. Quantum Color
    Extraordinary Color
  2. Brighter Picture
  3. 4K UHD + Dolby Vision HDR
    Exceptional 4K Detail
  4. Deeper Blacks
  5. SmartCast 3.0
    Smart TV
  6. Apple Airplay 2
    Stream from Apple Devices
  7. Google Chromecast
    Stream Thousands of Apps
  8. Hands-Free TV
    Voice Control
Watch Video
Watch Video
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor.

- Lorem ipsum

Praesent eget tincidunt purus. Fusce semper pellentesque tortor, at faucibus elit hendrerit id.

- dolor sit amet

Nunc pellentesque aliquam sem sit amet mattis. Aenean finibus ligula at odio aliquet aliquet.

- consectetur adipiscing

Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Morbi ut cursus enim, quis convallis sapien.

- sed do eiusmod

Our most colorful TVs ever.

An extraordinary color experience.
VIZIO Quantum Color technology produces over a billion colors for a more true to life picture.
Brighter picture, more details.
Delivers up to 3x brighter imagery with striking detail in every highlight.

Standard 4k TV

Deep shades of black.
Our powerful Active Full Array® backlight features for striking contrast and deep blacks.

Standard 4k TV

All New SmartCast™ 3.0

Stream easy. Enjoy more.

Stream from
your device with
Apple AirPlay 2 and
Chromecast built-in.
Stream movies, TV shows, music and more or mirror your screen for presentations and video chats directly on your VIZIO SmartCast TV.
Free & unlimited
TV with WatchFree.
Over 100 free live and original channels, including TV shows, movies, news, sports, lifestyle and trending digital series.

Use your voice to control your TV.

From playing your favorite show, to turning your TV on and off - VIZIO Smart TVs let you take control with simple voice commands.

Key Specs

  • Class Size55"
  • Screen Size (Diag.)54.50" / 1384.30 mm
  • Smart PlatformVIZIO SmartCast™ with Chromecast built-in
  • High Dynamic RangeDolby Vision, HDR10, HLG
  • Wide Color GamutQuantum Color Spectrum
  • ResolutionUltra HD - 3840 x 2160
  • UHD Upscale EngineSpatial Scaling Engine
  • Display ProcessorOcta-Core Processor
  • Backlight TypeFull Array LED
  • Cinemawide® Black Bar DetectionYes
  • Local Dimming ZonesYes with Local Dimming Zones x10
  • Clear Action™180
  • Built-in Wi-Fi802.11ac Dual Band
  • UHD Codec SupportVP9 and HEVC (H.265)

HDMI Inputs

  • HDMI Ports3 (side)

Additional Inputs

  • Ethernet1 (rear)
  • USB Ports1 (side)
  • TV TunerYes


  • ARCYes
  • Analog Audio Out1 (rear)
  • Digital Audio Out (SPDIF)1 (rear)


  • Effective Refresh Rate120Hz
  • Active Pixel Tuning™Yes
  • Dynamic Contrast Ratio200K:1
  • Aspect Ratio16:9
  • Viewable Angle (H/V)178º/178º
  • Number of Colors1.07Billion
  • OSD LanguageEnglish, Spanish, French


  • Speakers/Power Output8 watts x 2

Energy Savings

Energy Guide
  • Energy ComplianceN/A
  • Power Consumption148W
  • Standby Power Consumption< 0.5W

Wall Mount Specifications

  • Mount Pattern400 mm x 200 mm
  • Screw SizeM6
  • Hole Depth15.5mm

Stand Assembly

  • Screw SizeM4
  • Screw Length30mm

Included Accessories

  • Remote ControlXRT136
  • Battery Type2 x AAA (Duracell)

Size and Weight

  • Product with Stand Dimensions48.93" x 30.77" x 10.26" (1242.8mm x 781.6mm x 260.6mm)
  • Product with Stand Weight31.71 Lbs. / 14.38 Kg.
  • Product without Stand Dimensions48.93" x 28.33" x 3.04" (1242.8mm x 719.6mm x 77.2mm)
  • Product without Stand Weight31.03 Lbs. / 14.08 Kg.
  • Product Packaging Dimensions55.12" x 33.07" x 5.91" (1400.1mm x 840.0mm x 150.1mm)
  • Product Packaging Weight41.89 Lbs. / 19.00 Kg.

VIZIO Warranty

  • WarrantyOne Year Parts & Labor. Free Lifetime Technical Support.

Support Links

Contact Support

Clear All

You can compare a maximum of three products at a time.