4K UHD Smart LED TV - 55'' Class (54.6'' Diag)


  • 8.3M Pixels for 4x the Resolution of Full HD TVs
  • webOS 3.0: The Best Smart TV Just Got Better
4K UHD Smart LED TV - 55" Class (54.6" Diag)


    • Diagonal Class
    • 55 inches
    • Diagonal Size
    • 54.6 inches
    • Resolution
    • 3840 x 2160
    • Display Type
    • LED
    • Display Format
    • 4K UHD 2160p
    • HDMI Port(s)
    • 3 (HDCP 2.2)
    • Other Input(s)
    • 2 USB, 1 RF in (Antenna/Cable), 1 Composite In, 1 Component In (shared with composite), 1 Ethernet, 1 Optical, 1 RS232C (Mini Jack)
    • Smart TV Operating System
    • webOS 3.0
    • Refresh Rate
    • TruMotion 120 (Refresh Rate 60Hz)
    • Speaker System
    • 2 Channel
    • Other Features
    • Tru Black Panel, Dolby® Digital Decoder, DTS Decoder, Clear Voice

Picture Quality

    • ULTRA HD (3840x2160)
    • Yes
    • Refresh Rate
    • TruMotion 120 (Refresh Rate 60Hz)
    • IPS Panel
    • Yes
    • UHD Mastering Engine
    • Yes
    • Tru Black Panel
    • Yes
    • HDR Pro
    • Yes
    • Color Prime Pro
    • Yes
    • Ultra Luminance
    • Yes
    • 4K Upscaler
    • Yes
    • Local Dimming
    • Yes


    • webOS 3.0
    • Yes
    • Magic Remote Control
    • Ready (AN-MR650 accessory required)
    • Natural Voice Recognition
    • Ready (AN-MR650 accessory required)
    • Magic Mobile Connection
    • Yes
    • Universal Control Capability
    • Ready (AN-MR650 accessory required)
    • Magic Zoom
    • Ready (AN-MR650 accessory required)
    • LG Content Store (App Store)
    • Yes
    • Web Browser
    • Yes

Smart Share

    • Screen Share
    • Yes
    • Content Share
    • Yes


    • Speaker System
    • 2 Channel
    • Output Power
    • 20W
    • Mono/Stereo/Dual (MTS/SAP)
    • Yes
    • Dolby® Digital Decoder
    • Yes
    • DTS Decoder
    • DTS-HD
    • Clear Voice
    • Yes
    • Surround Mode
    • Ultra Surround
    • Wireless Sound Sync
    • Yes


    • Wi-Fi® Built-In
    • 802.11 a/c
    • Wi-Fi® Direct
    • Yes
    • Yes


    • HDMI®
    • 3 (HDCP 2.2)
    • USB
    • 2
    • RF In (Antenna/Cable)
    • 1
    • Composite In
    • 1
    • Component In
    • 1 (shared with composite)
    • Ethernet
    • 1
    • Optical
    • 1
    • RS232C (Mini Jack)
    • 1


    • Power Supply (Voltage, Hz)
    • 100~240Vac, 50~60Hz
    • Standby Mode
    • Less than 0.5W

Wall Mount

    • VESA
    • 300 x 300


    • TV without Stand (WxHxD)
    • 48.8" x 28.4" x 2.4"
    • TV with Stand (WxHxD)
    • 48.8" x 30.6" x 8.5"
    • TV Shipping Dimensions (WxHxD)
    • 53.5" x 32.9" x 6.0"
    • TV without Stand Weight
    • 36.4 lbs
    • TV with Stand Weight
    • 37.0 lbs
    • Shipping Weight
    • 46.1 lbs

Warranty / UPC

    • UPC
    • 719192605039


    • ENERGY STAR® Qualified
    • Yes

What people are saying

Rated 5 out of 5 by from Best decision Thought the price was a little too good to be true and I waited a few months before deciding to buy. Did lots of research and read many reviews. So glad I went for it! Set up was easy, size, audio and visual quality perfect. So many features it will take a while to explore them all. Only disappointment is the chrome edge, would have preferred black, No big deal though.
Date published: 2017-12-18
Rated 5 out of 5 by from Best picture ever OLED is the only way to go. The picture is amazing.
Date published: 2017-12-11
Rated 5 out of 5 by from Keeps up with demand of ice Bought recently, very roomy inside fridge and ice maker works greast
Date published: 2017-12-05
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Ask your questions. Share your answers.
Please review the detailed product information and help guides in the
Product Support section for this product prior to posting a question.

What is the name of cpu processor?

Asked by: sshoemakeriv1
The LG 4K UHD Smart LED TV - 55" Class (54.6" Diag), Model # 55UH6550 uses a quad-core processor with our webOS 3.0 TV Platform...^IFV
Answered by: Ivanf
Date published: 2019-04-29

Is there graphics cards in LG smart TV’s?

Asked by: sshoemakeriv1
TVs do have components integrated that process and display an image but they do not have a dedicated video card (GPU card) like computers do...^IFV
Answered by: Ivanf
Date published: 2019-04-29

Can LG smart TV’s play Xbox,PlayStation games?

Asked by: sshoemakeriv1
Regrettably, your inquiry is too general to provide you a correct response for. Which LG Smart TVs are you specifically inquiring about and which specific Xbox and PlayStation gaming consoles are you inquiring about? ^IV
Answered by: Ivanf
Date published: 2019-04-29

Why does my tv keep disconnecting from WiFi? How do I fix this?

Asked by: KeithP
Hello KeithP, we will need some more information to help out. Drop us a line on Twitter at @LGUSSupport,on Facebook at @LGUSAMobile or give us a call at 1-800-243-0000 so we can get that info and see what is going on. ^AC
Answered by: Amber C
Date published: 2019-05-22

Does this tv support or has hdr10?

Asked by: Dave Carreon 8
The 55UH6550 has HDR not HDR10. ^AC
Answered by: amber
Date published: 2018-01-04

I have 2 LG Smart TVs ( LG55UH6550 AND LG65UH6550 )....I want to buy headphones that fully cover the ears for both TVs.  What type(s) is compatible with these Smart TV models?  Is there one headphone type that can be used on “both” TVs?

Asked by: BJSS
Both the LG 4K UHD Smart LED TV - 55" Class (54.6" Diag), Model # 55UH6550 and Model # 65UH6550 have built-in Bluetooth and have been tested for compatibility with our LG Tone Series Stereo Bluetooth Headsets, however, these are not Circumaural headphones (sometimes called full-size headphones or over-ear headphones), nor are they Supra-aural headphones or on-ear headphones that have pads that press against the ears, rather than around them. The TVs do not have a Headphone (3.5 mm) jack that you can connect wired headphones to...^IFV
Answered by: LGJoel
Date published: 2018-06-10

Hi, does it have game ? We have not wifi yet , and i want play game on tv, can i ? 

Asked by: Akuli
Games are available for download from the LG Content Store (App Store) in the LG 4K UHD Smart LED TV - 55" Class (54.6" Diag), Model # 55UH6550 and you will need an internet connection for that...^IFV
Answered by: LGJoel
Date published: 2017-10-16

How do I do picture in picture?

Asked by: Lousandy
We appreciate your interest in this television and its features. The television would not have a picture in picture function, however, it has MULTIVIEW that allows you to view content from two different sources at once. The multi-view can be launched by selecting the multi-view app from the home menu.
Answered by: NeilE
Date published: 2017-09-19
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