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Boost productivity and immersion at your desk with the LG UltraWide 34" WQHD 1440p 144Hz Curved Monitor. This monitor boasts an ultrawide resolution of 3440 x 1440 and a commendable refresh rate of 144 Hz. An 1800R curve and 178° viewing angles help you stay engrossed in your workflow. Two HDMI 2.0, one DisplayPort 1.4, and one USB-C port provide ample connectivity. A 3.5 mm headphone jack allows for discrete work or gaming. The 300 nits VA panel is equipped with a 5 ms response time, a 4000:1 contrast ratio, and covers 99% of the sRGB color gamut, supporting 1.07 billion colors with HDR10.
Boost productivity and immersion at your desk with the LG UltraWide 34" WQHD 1440p 144Hz Curved Monitor. This monitor boasts an ultrawide resolution of 3440 x 1440 and a commendable refresh rate of 144 Hz. An 1800R curve and 178° viewing angles help you stay engrossed in your workflow. Two HDMI 2.0, one DisplayPort 1.4, and one USB-C port provide ample connectivity. A 3.5 mm headphone jack allows for discrete work or gaming. The 300 nits VA panel is equipped with a 5 ms response time, a 4000:1 contrast ratio, and covers 99% of the sRGB color gamut, supporting 1.07 billion colors with HDR10.
Ultrawide Display
The WQHD (3440×1440) display gives you room to work across multiple apps at once, reducing window switching and improving focus. The subtle 1800R curve follows your natural line of sight to keep long sessions comfortable, while the narrow-bezel design keeps the screen presentation clean and immersive.
Versatile Connectivity
Along with one DisplayPort and two HDMI inputs, the UltraWide features a USB-C port that is DP Alt Mode- and Power Delivery-capable. With just one USB-C cable, this allows you to display content, transmit data, and charge up to 65W.
Dual Device Ready
With the integrated KVM switch, you can control two PCs with a single monitor, keyboard, and mouse. Easily switch between devices and move files between systems with a simple drag-and-drop to streamline your setup and reduce desk clutter without extra hardware.
FreeSync Premium Technology
Powered by a FreeSync Premium certification, this monitor delivers tear-free, ultra-smooth visuals with low latency. As such, fast motion stays controlled, responsive, and visually precise during gameplay.
Reader Mode
Reader Mode reduces blue light, displaying warmer hues and tones ideal for reading documents or browsing for extended periods.
LG Switch App
The Switch app transforms your screen into a multitasking hub for work, gaming, and streaming. Effortlessly split the screen into up to six sections, customize display layouts, or launch video calls with a single hotkey.
UPC: 195174147368
LG 34U640B-B Specs
Key Specs
Display Size
34"
Panel Type
VA LCD
Native Resolution
3440 x 1440
Maximum Brightness
300 nits / cd/m2
HDR Support
Yes: HDR10
Color Support
1.07 Billion Colors
Color Gamut
99% sRGB
Touchscreen
No
A/V Inputs
DisplayPort 1.4 / HDMI 2.0
A/V Outputs
3.5 mm
USB I/O
USB-C 3.2 Gen 1
Built-In Speakers
No
Display
Size
34"
Panel Type
VA LCD
Aspect Ratio
21:9
Native Resolution
3440 x 1440
Maximum Brightness
300 nits / cd/m2
HDR Support
Yes: HDR10
Contrast Ratio
4000:1
Response Time
5 ms (GtG)
Refresh Rate
144 Hz
Variable Refresh Technology
FreeSync Premium
Color Support
1.07 Billion Colors
Color Gamut
99% sRGB
Viewing Angle (H x V)
178 x 178°
Curved Display
Yes: 1800R
Surface
Touchscreen
No
Connectivity
A/V Inputs
2x HDMI 2.0 1x DisplayPort 1.4
A/V Outputs
1x 1/8" / 3.5 mm (Headphone)
HDCP Support
Yes
USB I/O
1x USB-C 3.0 / 3.1/3.2 Gen 1 with DP Alt Mode, USB PD 65 W
31.9 x 18.3 x 8.7" / 81 x 46.5 x 22.1 cm (with Stand) 31.9 x 14.1 x 3.6" / 81 x 35.8 x 9.1 cm (without Stand)
Weight
17 lb / 7.7 kg (with Stand) 12.3 lb / 5.6 kg (without Stand)
Packaging Info
Package Weight
22.5 lb
Box Dimensions (LxWxH)
39 x 18.75 x 7"
LG 34U640B-B Reviews
Editing video got soo much easier!
By Kimverlyn C
Rated 5 out of 5
Date: 2026-06-23
[This review was collected as part of a promotion.] I’ve been trying to take my husband’s LG curved monitor for few weeks now, but I decided to get my own and I’m glad LG has 34inch monitor, and it’s been helpful since I added this in my desk set up. I don’t need to use my husband’s monitor or go to his office to edit videos. I genuinely loved it and definitely recommend this.
Review submitted as part of a program that provides a purchase discount.
Exactly what I needed!
By Amanda D
Rated 5 out of 5
Date: 2026-06-15
[This review was collected as part of a promotion.] I am slightly (very) clueless when it comes to technology. I needed a monitor to use in place of the screen on my laptop because it’s simply too small for everyday use, especially with my bad eyes! I got this monitor and was blown away with how easy set up was, I actually timed it because I was making dinner and was watching the clock, it took me less than 10 minutes to get it out of the box to ready to go.
Honestly getting it out of the box was the hardest part because they packaged the thing so dang securely it was like breaking into Fort Knox!! Another thing they did well was make set up even easier by including HDMI and DP cables so if you’re like me and hadn’t even thought that far, they got your back. No thought process needed, thanks LG! Honestly, this monitor not only solved my problem of needing a bigger/better screen but it made me an LG lover for life. Easiest product experience ever. 100% recommend!
Review submitted as part of a program that provides a purchase discount.
