27 Inch FHD 100Hz HDR10 Curved Monitor with USB Type-C 15W PD

1/4
Logo Image
1/4
LG Logo
27U421A_B
LG Monitor
LG Monitor
customize Your Screen View with the Switch App1
NEW
LG Monitor

27 Inch FHD 100Hz HDR10 Curved Monitor with USB Type-C 15W PD

27U421A-B

Key features

  • Full HD clarity and vibrant color on a curve built for everyday focus
  • 100Hz refresh rate keeps motion smooth for work, play, and everything else
  • USB-C and HDMI keep connections simple, clean, and ready for anything
  • Dynamic Action Sync cuts input lag for faster, more responsive gameplay
  • Black Stabilizer boosts visibility in dark scenes for a competitive edge
  • Customize Your Screen View with the Switch App¹
  • Ultra-slim stand frees up desk space for a cleaner, simpler setup
  • Three-side narrow bezel for more screen space and fewer distractions

Delivery

LG Premium Care by Asurion

This coverage adds to the standard manufacturer’s limited warranty. Not available in Florida.


Related Accessories

Review your selections

Selection Total

$149.99

Free Standard Shipping
Delivery straight to your door. Expedited options available during checkout.
No Interest Financing⁺⁺

$0 down + no interest financing on qualifying orders over $899 if paid in full up to 24 months.++

See Terms
Free Returns
Shop with confidence. Free returns within 14 days of delivery.
Extended Coverage
1-year standard warranty with parts and labor included. Additional extended service plans available.
Specifications

  • Picture Quality
  • Special Features
  • Input/Output
  • Stand
  • Power
  • Dimensions/Weights
  • Cabinet/Accessories
  • Warranty
  • See All
  • Picture Quality
    Color Depth (Number of Colors)
    16.7M
    Aspect Ratio
    16:9
    Brightness (Typical, Minimum)
    (Typ.) 250 cd/m² (Min.) 220 cd/m²
    Color Gamut (Typ.)
    sRGB 99% (CIE1931)
    Contrast Ratio
    3000:1 (Typ.)
    Display Type
    VA
    Pixel Pitch (mm)
    0.2745 x 0.2745
    Refresh Rate
    100Hz
    Resolution
    1920 x 1080
    Response Time (GTG)
    5ms (GTG)
    Screen Size
    27"
    Viewing Angle
    178˚(R/L), 178˚(U/D)
    Picture Quality
    Color Depth (Number of Colors)
    16.7M
    Aspect Ratio
    16:9
    Brightness (Typical, Minimum)
    (Typ.) 250 cd/m² (Min.) 220 cd/m²
    Color Gamut (Typ.)
    sRGB 99% (CIE1931)
    Contrast Ratio
    3000:1 (Typ.)
    Display Type
    VA
    Pixel Pitch (mm)
    0.2745 x 0.2745
    Refresh Rate
    100Hz
    Resolution
    1920 x 1080
    Response Time (GTG)
    5ms (GTG)
    Screen Size
    27"
    Viewing Angle
    178˚(R/L), 178˚(U/D)
    Special Features
    Curvature
    1500R
    LG Switch
    Yes
    Auto Input Switch
    Yes
    Black Stabilizer®
    Yes
    Color Weakness Mode
    Yes
    Dynamic Action Sync®
    Yes
    Flicker Safe
    Yes
    HDR Effect
    Yes
    HDR10
    Yes
    Reader Mode
    Yes
    Smart Energy Saving
    Yes
    Super Resolution+
    Yes
    Input/Output
    HDMI
    Yes x 1
    Headphone Out
    Yes
    USB Type-C
    Yes
    USB-C (Power Delivery)
    15 W
    Stand
    Display Position Adjustments
    Tilt
    Wall Mount Size (mm)
    100 x 100
    Power
    DC Off (Max)
    Less than 0.3W
    Input
    100~240V (50/60Hz)
    Power Save/Sleep Mode (Max)
    Less than 0.5W
    Type
    External Power(Adapter)
    Dimensions/Weights
    Shipping Dimensions (WxHxD)
    27.2 x 17.7 x 5.6
    Shipping Weight
    10.9 lbs
    With Stand (WxHxD)
    24.0 x 17.8 x 6.7
    With Stand Weight
    8.2 lbs
    Without Stand (WxHxD)
    24.0 x 14.2 x 1.8
    Without Stand Weight
    6.7 lbs
    Cabinet/Accessories
    HDMI Cable
    Yes
    Warranty
    Country of origin
    China
    Limited Warranty
    1 Year Parts & Labor
    UPC
    195174108420
    Features

    Vivid Color with Full HD Resolution

    The 1920x1080 Full HD resolution on the 27" delivers clear visuals and vibrant color on a curved screen designed to keep more of your work in view. Tackle tasks, browse, or stream with clarity that helps you stay focused and efficient.

    CREATIVE
DESIGN IDEA

    100Hz Smoother, Seamless Visuals

    With a 100Hz refresh rate and 5ms (GtG) response time, motion stays smooth and clear—whether you're scrolling, streaming, or switching between tasks.

    100Hz Smoother, Seamless Visuals

    Multiple Devices-One Cable

    Easily connect to laptops, desktops, or devices with USB Type-C™ and HDMI. USB-C delivers up to 15W power —all through a single, streamlined cable.

    Multiple Devices-One Cable

    Easy Viewing, Comfortable Reading

    Reader Mode lowers blue light levels, creating a more comfortable viewing experience—great for reading documents, browsing the web, or working for extended periods.

    Easy Viewing, Comfortable Reading

    Action As It Happens

    This monitor comes with Reader Mode which can reduce blue light emission to help provide a reduction in eye fatigue.

    Action As It Happens

    Never In The Dark

    Brighten up dark scenes and spot enemies faster with Black Stabilizer. It enhances visibility in shadowy areas—giving you the upper hand when the action gets intense.

    Never In The Dark

    Customize Your Screen View with the Switch App

    The Switch app1 transforms your screen into a multitasking hub for work, gaming, and streaming. Effortlessly split the screen into up to 6 sections, customize display layouts, or launch video calls with a single hotkey. Navigate smart features with ease and switch seamlessly between your PC and the built-in webOS streaming platform, all with intuitive shortcuts.

    Life Mode
Select theme design for Life mode.
Monitor
LG HDR CHO
Switch Mode
Start in every
Never
Virtual Wallpaper
Change wallpaper every
Scheduler

    Sleek Stand, Maximum Desktop Efficiency

    Free up your desk with the ultra-slim stand—built to minimize clutter and maximize usable space. Enjoy a cleaner, more organized setup without sacrificing screen size or comfort.

    Sleek Stand, Maximum Desktop Efficiency

    Virtually Borderless Design

    Maximize your workspace with the ultra-slim stand, designed to minimize desk clutter and optimize space. Enjoy a cleaner, more organized work area while still experiencing a full, immersive display.

    Virtually Borderless Design
    For owners

    Warranty Information

    1Software installation required. Visit Support on LG.com to download.


    Images may be simulated and dramatized for illustrative purposes. Actual features, functionality, and other product specifications may differ and are subject to change without notice. Prices, promotions, and availability may vary by model, store, and online. Prices subject to change without notice. Quantities are limited. Check with your local retailers for their final price and availability.

    USA, English

    Social Support

    • /LGUSSupport
    • @lgussupport


    BusinessPrivacyDo Not Sell or Share My Personal InformationTerms of UseTerms of PurchasePatentAccessibility HelpSite Map
    LG Logo Copyright © 2009-2025 LG Electronics. All Rights Reserved
    LG LogoLG Jeong-Do Management Ethics Hotline