LG 27U421A 27 " (27U421A-B)

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LG 27U421A 27 "

23.8 "27 "

2025 curved HDR Power Delivery

Screen size:27 "

Resolution:1920x1080 (16:9)

Panel:*VA, response 5 ms

Frequency:100 Hz

Contrast:3 000:1

Brightness:250 cd/m²

Functions:HDR, Flicker-Free

Connectors:USB-C (DP Alt Mode) • HDMI v2.0

All specifications

Specifications 27U421A

Colour

Product type	monitor
Size	27 "


Screen
Curved screen	1500R
Panel type	*VA
Surface treatment	anti-glare
Resolution	1920x1080 (16:9)
FPS	100 Hz
Pixel size	0.31 mm
Response time (GtG)	5 ms
Vertical viewing angle	178 °
Horizontal viewing angle	178 °
Brightness	250 cd/m²
Static contrast	3 000:1
Colour depth	16.7M Colors
Colour space (sRGB)	99 %
HDR	+

Connection
Video transmission	HDMI v2.0 USB-C (DP Alt Mode)
Power Delivery
Power PD	15 W
Connectors (optional)	mini-Jack output (3.5 mm)


Features
Features	Flicker-Free
Game Features	brighten darker areas / Black Stabilizer /


General
Wall mount	VESA 100x100mm
Power consumption	17 W
External power supply
Dimensions (WxHxD)	610x452x170 mm
Dimensions without stand (WxHxD)	610x360x44 mm
Weight	3.7 kg
Weight without stand	3 kg
Official Website	lg.com
Added to E-Catalog	May 2025
P/N	27U421A-B

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
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	Lg 27U421A-B.AEUQ EU Plug.Vivid colors with precision.Our FHD (1920x1080) screen delivers clear visuals with an sRGB 99% (Typ.) color gamut and... morea 1500R curvature, enhancing work productivity.Fluid visuals.Seamless workflow.A fast 100Hz provides a smooth frame loading in various programs.Also, you can enjoy realistic gameplay with less screen stuttering and motion blur.One port to meet your needs.Connect your laptop to the monitor with a USB-C cable.- for up to 15W of power delivery and display connectivity.Dynamic Action Sync.Reducing input lag with Dynamic Action Sync, gamers can catch critical moments in real time and respond quickly.Black Stabilizer.Black Stabilizer helps gamers detect snipers lurking in the darkest corners and swiftly navigate flash explosions.Switch swiftly.LG Switch app helps to optimize the monitor to your work and life.You can readily divide the whole display up to 6, change the theme design, or even launch a video call platform with a mapped hotkey.Fully use your desk.The slim stand takes up little space, allowing you to utilize your workspace efficiently.Easy and comfy solution.Featuring a slim bezel on three sides and a sleek stand, our FHD curved monitor lets you create an ideal workspace with convenient tilt adjustment.LG 27U421A-B.Display diagonal:68.6 cm (27´´), Display resolution:1920 x 1080 pixels, HD type:Full HD, Display technology:LED, Response time:5 ms, Native aspect ratio:16:9, Viewing angle, horizontal:178°, Viewing angle, vertical:178°.VESA mounting.Product colour:Black. Tradeinn.com Delivery: in United Kingdom Report	£97.99 Buy in shop

	LG 27U421A 27 VA Full HD 100Hz USB-C Curved Monitor Black 27U421A-B.AEKQ Immersive 27 Full HD Curved DisplayStep into a more engaging viewing experience with the LG 27U421A-B's 27-inch curved displa... morey. Designed to mirror the natural curvature of your eyes the 1500R curvature wraps around your field of vision reducing distortion and enhancing immersion. Whether you're watching videos gaming or working on spreadsheets the curve draws you in for a more comfortable and cinematic experience. Crisp Full HD VisualsWith a resolution of 1920 x 1080 the monitor delivers vibrant Full HD clarity for all your content. From high-definition videos to detailed photo editing the LG 27U421A-B ensures every pixel pops with sharpness and accurate color reproduction. Its VA (Vertical Alignment) panel provides deeper blacks and higher contrast ratios than traditional IPS screens making it ideal for both productivity and entertainment. Smooth 100Hz Refresh RateExperience ultra-smooth motion with the monitor’s 100Hz refresh rate—perfect for casual gaming streaming or even scrolling through documents. The increased refresh rate compared to standard 60Hz monitors offers reduced motion blur and a more responsive feel giving you a competitive edge during fast-paced moments and a more fluid viewing experience overall. Versatile USB-C ConnectivitySimplify your workspace with the integrated USB-C port offering data transfer display output and device charging—all through a single cable. Ideal for modern laptops and smart devices USB-C connectivity reduces desk clutter and streamlines productivity. With power delivery support the LG 27U421A-B can even charge compatible devices while in use. Enhanced Comfort with Eye Care FeaturesDesigned for extended viewing sessions this monitor includes flicker-free technology and a built-in blue light filter to help reduce eye strain and fatigue. Whether you're burning the midnight oil on a project or enjoying a long gaming session these features help protect your vision and maintain comfort throughout the day. Sleek Design for Modern SetupsThe monitor's minimalist design and ultra-slim bezels make it a stylish addition to any workspace or home setup. Its curved profile and matte black finish lend a premium professional look that complements your tech environment while maximizing screen space with minimal distraction. Tilt-Adjustable StandFind your ideal viewing angle with the tilt-adjustable stand which allows you to customize the monitor's position for better ergonomics. Whether you’re seated at a desk or standing with a sit-stand workstation the LG 27U421A-B adapts to your comfort and workflow preferences.. Laptopsdirect.co.uk Delivery: to United Kingdom Report	£99.97 Buy in shop

	LG 27U421A-B computer monitor 68.6 cm (27") 1920 x 1080 pixels Full HD LED Black Clove.co.uk Delivery: to United Kingdom Report	£99.63 Buy in shop

	LG 27U421A-B 27" Curved Full HD 100Hz USB-C Monitor 27U421A-B.AEKQ Unleash unprecedented power and experience true elegance with LG 27U421A-B 27" Curved FHD 100Hz USB-C Monitor. Now available... moreat Box.co.uk! Secure payments! Box.co.uk Delivery: to United Kingdom Report	£99.99 Buy in shop

	LG LG 27" 27U421A-B VA 1920x1080 Curved 100Hz Monitor with USB-C Port Widescreen Gaming Monitor 27U421A-B.AEKQ LG Monitors- Why USB Type-C with PD? {{ cmsYoutubeVideo('hj2I0Z3glqg') }} LG 27 Inch 27U421A-B FHD 100Hz HDR10 Curved Mo... morenitor with USB Type-C 15W PD. LG 27" 27U421A-B Curved Widescreen Gaming Monitor at a Glance: Full HD clarity and vibrant colour 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 For more information on VA monitors, check out our Gaming Monitor Guide on the Overclockers UK Blog or speak to our friendly sales team. Specifications Colour Depth (Number of Colours) 16.7M Aspect Ratio 16:9 Brightness (Typical, Minimum) (Typ.) 250 cd/m² (Min.) 220 cd/m² Colour 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) Curvature 1500R LG Switch Yes Auto Input Switch Yes Black Stabilizer® Yes Colour 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 HDMI Yes x 1 Headphone Out Yes USB Type-C Yes USB-C (Power Delivery) 15 W Display Position Adjustments Tilt Wall Mount Size (mm) 100 x 100 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) 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 HDMI Cable Yes Country of origin China Limited Warranty 1 Year Parts & Labour Overclockers.co.uk Delivery: to United Kingdom Report	£99.95 Buy in shop