Imagine a screen that pulls you straight into the game, the movie, or the design you are creating. The LG 39GX900A-B 39" 3440 x 1440 pixels Wide Quad HD OLED Monitor Black is a huge curved display that gives you that deep-black, vivid color experience. If you are tired of cramped 16:9 monitors that cut off side details, this monitor solves the problem with a wide 21:9 view and lightning-fast response, so you never miss a moment.
LG 39GX900A-B 39" 3440 x 1440 pixels Wide Quad HD OLED Monitor Black
Many gamers and creators struggle with screens that are too narrow or too slow, causing eye strain and lost detail. That problem matters because it reduces performance, enjoyment, and even health over long sessions. This monitor offers a 34% wider view, OLED black depth, and a 0.03 ms response with 240 Hz refresh. The result is a clear, immersive picture that lets you see everything, react instantly, and stay comfortable for hours.
Usages of quot
The monitor works great for fast-paced shooters where every frame counts, thanks to its low latency and high refresh rate. It also shines for video editing, giving you accurate colors and a wide workspace for timelines. Streamers can enjoy the built-in headphone jack and clear audio while keeping the screen free of glare. Even office workers benefit from the extra horizontal space for multiple windows, reducing the need to switch tabs.
Benefits
- Wider view lets you see more of the game world at once.
- OLED black depth makes dark scenes clear and realistic.
- 0.03 ms response and 240 Hz keep motion smooth and lag free.
- Built-in eye-care tech reduces blue-light and flicker fatigue.
- USB-C power delivery simplifies cable clutter and powers laptops.
Key Features
- 39-inch 21:9 curved WOLED panel.
- 3440 x 1440 resolution for sharp detail.
- DisplayHDR 400 True Black for vivid highlights.
- 275 cd/m typical brightness, 1300 cd/m peak.
- 800R curvature matches natural eye field.
- FreeSync Premium Pro and G-Sync compatible.
- Low Latency mode reduces input lag.
- Black Stabilizer brightens dark areas.
- Crosshair overlay for precise aiming.
- Adjustable stand with tilt, swivel, height, and cable management.
Specifications
| Display |
| DCI-P3 coverage |
98.5% |
| Colour gamut standard |
DCI-P3 |
| High Dynamic Range (HDR) technology |
DisplayHDR 400 True Black, HDR Effect, High Dynamic Range 10 (HDR10) |
| High Dynamic Range (HDR) supported |
Yes |
| Display diagonal (metric) |
99.1 cm |
| Pixel pitch |
0.266 x 0.266 mm |
| Display number of colours |
1.07 billion colours |
| Viewing angle, vertical |
178° |
| Viewing angle, horizontal |
178° |
| Maximum refresh rate |
240 Hz |
| Contrast ratio (typical) |
1500000:1 |
| Screen curvature rating |
800R |
| Screen shape |
Curved |
| Anti-glare screen |
Yes |
| Response time measurement type |
GTG (Gray to Gray) |
| Response time |
0.03 ms |
| Display brightness (typical) |
275 cd/m² |
| Display brightness (peak) |
1300 cd/m² |
| Panel type |
WOLED |
| HD type |
Wide Quad HD |
| Touchscreen |
No |
| Display technology |
OLED |
| Native aspect ratio |
21:9 |
| Display resolution |
3440 x 1440 pixels |
| Display diagonal |
99.1 cm (39") |
| Performance |
| Smart modes |
Energy saving |
| Game features |
Refresh Rate Optimizer |
| Game mode |
Yes |
| Low Blue Light technology |
Yes |
| Flicker-free technology |
Yes |
| VESA Adaptive Sync support |
Yes |
| AMD FreeSync type |
FreeSync Premium Pro |
| NVIDIA G-SYNC type |
G-SYNC Compatible |
| AMD FreeSync |
Yes |
| NVIDIA G-SYNC |
Yes |
| Multimedia |
| Built-in camera |
No |
| RMS rated power |
7 W |
| Number of speakers |
2 |
| Built-in speaker(s) |
Yes |
| Design |
| Product colour |
Black |
| Market positioning |
Gaming |
| Ports & interfaces |
| HDCP version |
2.3 |
| HDCP |
Yes |
| Headphone out |
Yes |
| DisplayPort version |
1.4 |
| DisplayPorts quantity |
1 |
| HDMI version |
2.1 |
| HDMI ports quantity |
2 |
| HDMI |
Yes |
| USB Power Delivery up to |
65 W |
| USB Power Delivery (USB PD) |
Yes |
| USB Type-C DisplayPort Alternate Mode |
Yes |
| USB Type-C downstream ports quantity |
1 |
| USB Type-A downstream ports quantity |
2 |
| Built-in USB hub |
Yes |
| Ergonomics |
| Picture-in-Picture |
Yes |
| Tilt adjustment |
Yes |
| Swivelling |
Yes |
| Height adjustment |
Yes |
| Cable management |
Yes |
| Wall mountable |
Yes |
| Panel mounting interface |
100 x 100 mm |
| VESA mounting |
Yes |
| Power |
| Power supply type |
External |
| AC input frequency |
50/60 Hz |
| AC input voltage |
100 - 240 V |
| Power consumption (off) |
0.3 W |
| Power consumption (standby) |
0.5 W |
| Power consumption (typical) |
41 W |
| Energy consumption (HDR) per 1000 hours |
41 kWh |
| Energy consumption (SDR) per 1000 hours |
38 kWh |
| Energy efficiency class (HDR) |
G |
| Energy efficiency class (SDR) |
F |
| Weight & dimensions |
| Weight (without stand) |
7.3 kg |
| Height (without stand) |
404.4 mm |
| Depth (without stand) |
198 mm |
| Width (without stand) |
887.8 mm |
| Weight (with stand) |
11.4 kg |
| Height (with stand) |
605.7 mm |
| Depth (with stand) |
322.8 mm |
| Width (with stand) |
887.8 mm |
| Packaging data |
| Package type |
Box |
| Package weight |
17.5 kg |
| Package height |
338 mm |
| Package depth |
550 mm |
| Package width |
985 mm |
| Packaging content |
| Cables included |
AC, DisplayPort, HDMI, USB Type-C |
| Stand included |
Yes |
| Other features |
| Package weight |
17.5 kg |
| Warranty period |
2 year(s) |
| Hardware calibration |
Yes |
| FPS counter |
Yes |
| Brand specific technologies |
Black Stabilizer, DAS Mode, Eye care |
