LG 55 Inch 4K Ultra HD Smart TV 55SJ8500 UHD TV

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Tech Specs

Quick Specs

Product Type
LED-backlit LCD TV - Smart TV
Diagonal Class
Diagonal Size
54.6 in
webOS 3.5
3840 x 2160
Display Format
4K UHD (2160p)
Motion Enhancement Technology
TruMotion 240Hz
Video Interface
Component, composite, HDMI
HDMI Ports Qty
4 ports
Wi-Fi, LAN
LCD Backlight Technology
LED backlight - local dimming, Nano Cell Display
Image Aspect Ratio
Picture Enhancements
4K Upscaling, True Color Accuracy, Billion Rich Colours, HDR Effect, Active HDR
Sound Effects
ULTRA Surround
3 ports
AC 120/230 V (50/60 Hz)
Energy Consumption per Year
152 kWh
Dimensions (WxDxH) - without stand
48.4 in x 2.3 in x 27.9 in
39.9 lbs


Product Type
LED-backlit LCD TV - Smart TV
Energy Consumption per Year
152 kWh
Diagonal Class
Diagonal Size
54.6 in
SJ8500 Series
webOS 3.5
HDR Capable
TV Tuner Presence
Video Interface
Component, composite, HDMI
HDMI Ports Qty
4 ports
Picture Enhancements
4K Upscaling, True Color Accuracy, Billion Rich Colours, HDR Effect, Active HDR
Without stand
48.4 in
2.3 in
27.9 in
39.9 lbs


LCD Display Technology
3840 x 2160
Display Format
4K UHD (2160p)
Image Aspect Ratio
Motion Enhancement Technology
TruMotion 240Hz
LCD Backlight Technology
LED backlight - local dimming, Nano Cell Display
Additional Features
Natural Voice Recognition, wide color gamut technology, Ultra Luminance, Dolby Vision

Stands & Mounts

Stand Design
Flat Panel Mount Interface
300 x 300 mm

Media Player

USB Port
USB Ports Qty

Audio System

Digital Audio Format
DTS-HD digital output
Surround Mode
Sound Effects
ULTRA Surround
Output Power / Total
40 Watt
Additional Features
Built-in DTS decoder, Wireless Sound Sync, Harman/Kardon design, Hi-Fi Audio

Network & Internet Multimedia

Digital audio playback, digital photo playback, digital video playback, WEB browsing, Internet video playback
Wi-Fi, LAN
LAN Protocol
Wi-Fi Protocol
Connect & Share
Wi-Fi Direct, Content Share, Screen Share
Supported Consumer Electronics Control (CEC)
Application Store
LG App Store


Connector Type
  • 4 x HDMI
  • 3 x USB
  • Composite video / component video input
  • Network
  • Digital audio output (optical)
  • Serial input
  • Audio line-in


Included Accessories
LG Magic Remote control


Power Device
Power supply
Nominal Voltage
AC 120/230 V (50/60 Hz)
Power Consumption Stand by
0.5 Watt
Estimated Annual Operating Cost
18 USD

Dimensions & Weight Details

Dimensions & Weight Details
  • Panel without stand - 48.4 in x 2.3 in x 27.9 in x 39.9 lbs
  • Panel with stand - 48.4 in x 9.7 in x 30.1 in x 43 lbs

Dimensions & Weight (Shipping)

Width (Shipping)
53.5 in
Depth (Shipping)
6.4 in
Height (Shipping)
33.9 in
Weight (Shipping)
53.4 lbs


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LG 55 Inch 4K Ultra HD Smart TV 55SJ8500 UHD TV

Market Value
Dell Price

DFS Financing
As low as $24 /mo.^ | Apply
Ships 6/20/2018


SUPER UHD 4K HDR Smart LED TV - 55" Class (54.6" Diag)
Key Features
  • Nano Cell™ Display
  • Billion Rich Colors
  • Active HDR with Dolby Vision™
  • webOS 3.5 Smart TV
Binge Bigger
Watch every episode of your favorite shows on the larger, more colorful picture of a LG SUPER UHD television.
Nano Cell™ Display. Color Like You’ve Never Seen.
No matter which seat in the TV room one chooses—straight on or at an angle—colors look truer and black levels look deeper. See it in action. Check out interviews of legendary soccer players and behind-the-scenes stories from the LG Nano Cell™ Super Match.
Ultra-fine Color Expression Through
Nano Cell™ Technology
How do we see color? The wavelengths of reflected light determine what color you see. Nano Cell Display composed of nano particles integrated in panel absorbs any light interference and drastically  enhances the color accuracy displayed on screen. Nano Cell Display produces a billion rich colors for a clearer, more lifelike 4K picture.
Lifelike Picture With Over A Billion Rich Colors
Nano Cell Display reveals a billion lifelike colors, 64 times richer than conventional TV. This ability to produce a wider spectrum of color results in superior picture quality.
Billion Rich Colors
The availability of a billion rich colors gives the TV a palette 64-times broader than conventional televisions, to reproduce images with far more subtle and precise gradations, for a more lifelike picture.
Billion Rich Colors is achieved through 10 bit dithering.
SUPER UHD Cinematic Experience
LG SUPER UHD TVs deliver an experience that rivals the local theater. webOS streams the finest entertainment in just a few clicks, looking bold and rich thanks to Active HDR with Dolby Vision™. And the premium harman/kardon® audio system fills the room with deep, nuanced sound.
harman/kardon® Sound
From the masters of home audio, Harman Kardon, comes built-in TV audio that truly performs. The speakers on LG SUPER UHD TVs have been custom-tuned to provide clean, powerful, full-range audio that fills any TV room.
Enjoy The Most HDR Content
From brilliant brights to deepest darks, LG SUPER UHD TV offers the ultimate expression of high dynamic range. Unlike some other 4K televisions, LG SUPER UHD TVs support Dolby Vision™, optimizing the picture scene-by-scene, as well as the new HLG HDR standard so viewers get more options for premium content.

LG SUPER UHD TV supports the premium HDR, Dolby Vision™ favored by renowned filmmakers from all over the world. LG SUPER UHD TV not only delivers Dolby Vision, but also offers compatibility with other HDR formats such as HDR10 and HLG.
LG SUPER UHD TV supporting premium HDR Dolby Vision™, processes Dolby Vision’s dynamic metadata* within each frame, to present the intended vision of the director in your very own living room. HDR10 and HLG are rendered by LG SUPER UHD TV’s exclusive processing. By applying dynamic data produced by LG TV processing on a scene-by-scene basis, all types of content is displayed with improved HDR quality.
The compatibility for HDR playback may vary by the format and country.
Dolby and the double-D symbol are registered trademarks of Dolby Laboratories. Dolby Vision is a trademark of Dolby Laboratories.
Dolby Access features clips of feature-length films to showcase capabilities.
webOS 3.5 Smart TV
webOS brings together all of the most popular streaming video apps, including Netflix, brought to life in 4K, HDR or enhanced with HDR Effect. And webOS gives you access to more than 70 free premium Internet channels through the LG Channel Plus app.
Please check with content providers for required bandwidth to stream videos. Smart service on product is subject to change. Some apps that appear on the screen image may not be pre-installed; Internet connection is required for download.
Channel Plus
Channel the Internet
Get 100 free IP channels including Got Talent Global, Outside TV Shorts, Just for Laughs, and more integrated right into the television. Discover premium new entertainment, sports and lifestyle programming or enjoy old favorites any time.
Watch what you want, when you want
Netflix Recommended TV recognizes Smart TVs that meet strict criteria for a superior Netflix experience, such as easy app access and new features. For the third year in a row, LG TVs have the distinction of being recommended by Netflix!
Netflix streaming membership required. Ultra HD availability subject to your Netflix subscription plan, Internet service, device capabilities, and content availability. Visit nflx.it/4K
   SLING TV   
Introducing A La Carte TV, the only live TV service that lets you personalize your channel lineup and save. Customize with your favorite extras like Sports, Comedy, Kids, News, Hollywood, Lifestyle and more. Watch 7 Days Free! Restrictions apply.
Gorgeous Picture No Matter How You Look At It
From the front or from the side, every seat in the TV room gets a clear, vibrant picture without washed out tones. Thanks to IPS technology, LG SUPER UHD TVs ensure any view is a great one, not just those front and center.

Research shows that about 60% of people watch TV off axis, defined as any viewing angle that is more than 15° from center at which picture quality begins to degrade in a conventional TV.
Earning the ENERGY STAR® means a product meets stringent energy efficiency requirements set by the US Environmental Protection Agency. ENERGY STAR® certified televisions are on average, 27 percent more energy efficient than conventional models, saving energy in all usage modes: sleep, idle and on.
SUPER Stands Out
Take a closer look at what makes SUPER UHD our best LED television.
A Variety of Options
Explore the entire line up of SUPER UHD TVs that deliver color in vivid detail.
Sizable TV Savings
Get a priceless viewing experience from big TVs with big savings to match.
Diagonal Class 55 inches
Diagonal Size 54.6 inches
Resolution 3840 x 2160
Display Type Super UHD TVs
Display Format 4K UHD 2160p
HDMI Port(s) 4 (HDCP 2.2)
Other Input(s) 3 USB, 1 RF In (Antenna/Cable), 1 Composite In, 1 Ethernet, 1 Optical, 1 RS232C (Mini Jack)
Smart TV Operating System webOS 3.5
Refresh Rate TruMotion 240 (Refresh Rate 120Hz)
Speaker System 2.2 Channel
Other Features Active HDR with Dolby Vision™, Nano Cell Display, Wider Color Gamut, Billion Rich Colors, Ultra Luminance, Sound Designed by Harman Kardon™
ULTRA HD (3840x2160) Yes
Refresh Rate TruMotion 240 (Refresh Rate 120Hz)
Nano Cell Display Yes
Active HDR with Dolby Vision™ Yes
HDR Effect Yes
Wider Color Gamut Yes
True Color Accuracy Yes
IPS Technology Yes
Billion Rich Colors Yes
ULTRA Luminance Yes
4K Upscaler Yes
Local Dimming Yes
webOS 3.5 Yes
Magic Remote Control Included
Natural Voice Recognition Yes
Universal Control Capability Yes
LG Content Store (App Store) Yes
Full Web Browser Yes
Channel Plus Yes
Screen Share Yes
Content Share Yes
Speaker System 2.2 Channel
Output Power 40W (Woofer: 20W)
Sound Designed by harman/kardon® Yes
DTS Decoder DTS-HD
Surround Mode Ultra Surround
Hi-Fi Audio Yes
Wireless Sound Sync Yes
Wi-Fi® Built-In 802.11ac
Wi-Fi® Direct Yes
IP Control Yes
HDMI® 4 (HDCP 2.2)
RF in (Antenna/Cable) 1
Composite In 1
Ethernet 1
Optical 1
RS232C (Mini Jack) 1
Power Supply (Voltage, Hertz) 100~240Vac, 50~60Hz
Standby Mode Less than 0.5W
VESA 300 x 300
TV without stand (WxHxD) 48.4" x 27.9" x 2.3"
W Stand (WxHxD) 48.4" x 30.1" x 9.7"
Shipping (WxHxD) 53.5" x 33.9" x 6.4"
TV without Stand Weight 39.9 lbs
W Stand Weight 43.0 lbs
Shipping Weight 53.4 lbs
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This LG TV delivers deep black expressions for rich, natural shadow detail and rich colors that are truer to the original image, even at wide viewing angles.