LG

34U640B-B UltraWide Monitor

34-inch VA UltraWide monitor with 3440 × 1440 resolution and up to 144Hz refresh rate.

Brand: LG
Category: Monitors
Brand focus: Monitors · Displays
Supply: Pricing and availability on request

Individual models and specifications are listed on the brand page. Contact our sales team for availability and trade pricing.

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LG DISPLAY TECHNOLOGY

Product overview

View official LG specifications

The LG 34U640B-B combines a curved 34-inch VA panel with a wide 3440 × 1440 workspace and up to 144Hz refresh. Its 1800R curvature, HDR10 compatibility and USB-C power delivery make it suitable for mixed productivity and entertainment setups. The 21:9 screen ratio helps keep several windows open side by side.

1800R curved displayHDR10USB-C PD 65W

Technical specifications

Specifications of LG 34U640B-B
Model	34U640B-B
Display size	34 inches
Display resolution	3440 × 1440
Panel technology	VA
Maximum refresh rate	144 Hz
Aspect ratio	21:9
Screen type	Curved

Additional technical details

Additional specifications for LG 34U640B-B
Typical brightness	300 cd/m²
Color gamut (typical)	sRGB 99%
Contrast ratio (typical)	4000:1
Response time	5 ms GtG
Curvature	1800R
Adaptive sync	FreeSync Premium
USB-C power delivery	65 W
Typical on-mode power	45 W
Stand adjustments	Tilt / height
VESA mount	100 × 100 mm
Dimensions with stand (W × H × D)	809.1 × 464.4 × 220 mm
Weight with stand	7.7 kg

Core characteristics are checked against official LG model pages when available. Additional specifications are transcribed from the supplied LG specification workbook; market versions may differ.