BeachAI
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39"Panel Size
WQHD (3440 x 1440)Resolution
240 HzRefresh Rate
OLEDPanel Type
39"size
WQHD (3440 x 1440)res
240 Hzrefresh
OLEDpanel
List Price:
iList price reflects the manufacturer’s suggested retail price (MSRP). Actual savings may vary. See terms.
LG 39" UltraGear OLED WQHD 240Hz 0.03ms 800R Curved Gaming Monitor
SKU: LG39GX900AB
Save 50% vs. list price
vs. MSRPiCompare-at price reflects MSRP. Actual savings may vary. See terms.
Product Information
39”
Panel Size39"
ResolutionWQHD (3440 x 1440)
Refresh Rate240 Hz
Panel TypeOLED
Full specifications
- Screen size
- 39” · 99.1 cm diagonal
What shoppers are saying
Read all reviews →LG · UltraGear OLED
Ahead of the curve. Literally.
240Hz OLED speed. 0.03ms response. 800R immersion.
240Hz
Refresh rate
0.03ms
GtG response
800R
Curvature
98.5%
DCI-P3 coverage
1,300nits
Peak brightness (APL 1.5%)
01 / 03 · Speed
OLED-fast, tear-free
A 240Hz refresh rate and 0.03ms GtG response let you react at the speed of the game with less lag and ghosting. FreeSync Premium Pro and G-SYNC compatibility keep every frame synced and stutter-free, while Dynamic Action Sync, Black Stabilizer, crosshair, and FPS counter sharpen your edge.
240Hz0.03ms GtGFreeSync Premium ProG-SYNC compatible
02 / 03 · Picture
Deep blacks, brilliant highlights
The 39-inch WQHD OLED wraps 3440 x 1440 resolution in a steep 800R curve that fills your periphery. With 98.5% DCI-P3 coverage, a 1.5M:1 contrast ratio, DisplayHDR True Black 400, and up to 1300 nits peak brightness (APL 1.5%), every scene pops with cinematic depth — behind a low-glare surface.
800R curveTrue Black 4001.5M:1 contrastAnti-glare
03 / 03 · Connectivity
Console, PC, and beyond
Two HDMI 2.1 ports, DisplayPort 1.4, and USB-C with 65W power delivery run your whole battlestation, with the Switch app splitting the screen into up to six zones for multitasking. Height, tilt, and swivel adjustments plus hexagon RGB lighting finish the setup — backed by a 2-year limited warranty covering the OLED panel.
HDMI 2.1 x2USB-C 65W2-year panel warranty
Full specifications
Key specs
Panel size39"
ResolutionWQHD (3440 x 1440)
Refresh rate240 Hz
Panel typeOLED
In the box
- USB Type-C cable
- DisplayPort cable
- HDMI cable
- LG 2-Year Limited Warranty
This is what winning looks like at 240 frames a second — from Beach Camera, your authorized LG dealer.
Beach Camera · Authorized dealer since 1983 · Edison, NJ
Get to know us
Our promise
30-day
returns.
returns.
Not satisfied? Most items may be returned within 30 days of delivery. No restocking fee. See our return policy for full details.
Estimated return window
April 23, 2026
Performance specs
Built to
perform.
perform.
39"
Panel Size
WQHD (3440 x 1440)
Resolution
240 Hz
Refresh Rate
OLED
Panel Type
Why you'll love it
Highlights
that matter.
that matter.
240 Hz refresh — zero motion blur in fast-paced games
WQHD (3440 x 1440) resolution — razor-sharp text all day
OLED panel — accurate color out of the box
Package contents
What's
in the box
in the box
1
LG 39" UltraGear OLED WQHD 240Hz 0.03ms 800R Curved Gaming Monitor2
USB Type-C cable3
DisplayPort cable4
HDMI cable5
LG 2-Year Limited Warranty
We're here for you
Have a
question?
question?
Our US-based team typically responds within 2 hours.
Live chat
Typically responds in minutes
Online
Email support
support@beachai.com
Beach AI — a Beach Camera brand
Beach
Camera.
Camera.
40 years of trust
behind every order.
behind every order.
Authorized dealer for many major brands. Millions of orders shipped. US-based support since 1983. Shipping times vary by location and availability.
Est. 1983
★★★★★
Frequently asked questions
How fast is this monitor?
It runs up to 240Hz with a near-instantaneous 0.03ms (GtG) response time — OLED speed that minimizes lag and ghosting.
Does it support FreeSync and G-SYNC?
Yes, it is AMD FreeSync Premium Pro certified and NVIDIA G-SYNC compatible, with VESA Adaptive Sync for tear-free frames on PC and console.
Can I connect a console and a PC?
Yes — two HDMI 2.1 ports, DisplayPort 1.4, and USB-C (with 65W power delivery) cover next-gen consoles and gaming PCs simultaneously, plus two USB 3.0 downstream ports.
How good is the picture?
The OLED panel covers 98.5% of DCI-P3, hits a 1.5M:1 contrast ratio, and is VESA DisplayHDR True Black 400 certified, with peak brightness up to 1300 nits (APL 1.5%).
What is the 800R curve like?
It is a steep, dramatic curvature that extends your peripheral view and pulls you deeper into the game — the defining feature of this 21:9 ultrawide.
What about OLED burn-in protection?
The 2-year limited warranty covers key components including the OLED panel, and built-in OLED Care tools such as pixel cleaning help keep the display in top condition.
Is the stand adjustable?
Yes — height, tilt, and swivel adjustments, plus 100 x 100 mm VESA wall-mount compatibility and RGB hexagon rear lighting.
What cables are included?
USB Type-C, DisplayPort, and HDMI cables all come in the box.
Does this product include free shipping?
Free standard shipping is included to the contiguous United States. Excludes Hawaii, Alaska, and Puerto Rico. See full shipping policy.
What is the return policy?
Beach AI offers a 30-day return window from the date of delivery with no restocking fee. See return policy for full eligibility details.
What warranty comes with this product?
A 1-year limited warranty is included at no additional cost. Covers manufacturing defects, subject to warranty terms in the included documentation.
Is financing available?
Shop Pay Installments offers 0% APR for 12 months on eligible purchases, subject to credit approval. See Shop Pay terms.
Who is this monitor designed for?
This monitor is built for gamers who need high refresh rates and fast response times, creative professionals who need accurate color and a wide canvas, and work-from-home users who benefit from ultrawide multitasking.
Is Beach AI an authorized dealer?
Yes. Beach AI is a brand of Beach Camera Inc., an authorized dealer for major consumer electronics brands since 1983. All products are sold and shipped by Beach AI with US-based support.
Terms, Disclaimers & Legal Information
Pricing & Availability
Prices and availability are subject to change without notice. Compare-at prices reflect MSRP or a former selling price and may not represent the prevailing market price. Actual savings may vary. Beach AI reserves the right to correct pricing errors at any time, including after an order is placed.
Shipping & Delivery
Estimated delivery dates are not guaranteed except as expressly stated in the DecoDash delivery guarantee, which is subject to its own terms. Standard shipping applies to the contiguous US only — excludes Hawaii, Alaska, Puerto Rico, and APO/FPO addresses. Delivery times may vary due to carrier delays, weather, or other factors outside our control. Risk of loss passes to the customer upon carrier pickup.
Returns & Refunds
All returns are subject to our Return Policy. Return eligibility and timeframes may vary by product. Beach AI reserves the right to refuse returns that do not meet stated conditions. Original shipping charges are non-refundable unless the return is due to our error.
Limited Warranty
Products are covered by a limited warranty only. Coverage excludes damage from misuse, accident, unauthorized modification, or normal wear and tear. Beach AI disclaims all implied warranties to the maximum extent permitted by law. Warranty terms vary by product — see included documentation for details.
Product Information
Specifications, images, and descriptions are for informational purposes only and subject to change without notice. Product images are illustrative — actual color, appearance, and specifications may vary. Customer is responsible for verifying compatibility prior to purchase.
Authorized Dealer
Beach AI, a brand of Beach Camera Inc., is an authorized dealer for many major brands. Authorized status may vary by brand and product. All third-party brand names and trademarks are property of their respective owners and are used for identification purposes only.
Limitation of Liability
To the fullest extent permitted by law, Beach AI and Beach Camera Inc. shall not be liable for any indirect, incidental, special, or consequential damages arising from your purchase or use of any product. Our total liability shall not exceed the purchase price of the product giving rise to the claim. Some states do not allow limitation of liability for consequential damages, so this limitation may not apply to you.Dispute Resolution — Mandatory Arbitration
Any dispute, claim, or controversy arising out of or relating to your purchase or any product must be resolved as follows: (1) You agree to first contact Beach AI at support@beachai.com to attempt informal resolution within 30 days of the dispute arising. (2) If informal resolution fails, the dispute must be submitted to non-binding mediation in the State of New Jersey before any legal proceeding may be initiated. (3) If mediation does not resolve the dispute within 60 days, the dispute shall be finally and exclusively resolved by binding individual arbitration administered by the American Arbitration Association (AAA) under its Consumer Arbitration Rules, conducted in the State of New Jersey. The arbitrator's decision shall be final and binding and may be entered as a judgment in any court of competent jurisdiction. YOU AND BEACH AI AGREE THAT EACH MAY BRING CLAIMS AGAINST THE OTHER ONLY IN AN INDIVIDUAL CAPACITY. YOU WAIVE ANY RIGHT TO PARTICIPATE IN A CLASS ACTION LAWSUIT OR CLASS-WIDE ARBITRATION. All disputes are governed by the laws of the State of New Jersey, without regard to conflict of law provisions.