LG 27BL55U-B 27" Class 4K UHD LCD Monitor - 16:9

MSRP: $600.00
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LG 27BL55U-B 27” IPS HDR UHD 4K Monitor (3840 x 2160) with Radeon FreeSync™ Technology, Game Mode, On Screen Controls, Ergonomic Stand & HDCP 2.2 Compatible

When IPS meets 4K, the result is even more amazing than they are on their own. The 27BL55U-B’s Ultra HD IPS Display offers much better color reproduction compared to TN panels, providing incredible viewing angles and great color consistency over the entire screen. With a 4K IPS monitor, designers can enjoy seamless viewing for an ultimate immersive gaming experience. Furthermore, the 27BL55U-B in 3840x2160 Ultra HD resolution provides increased clarity, sharper texture, more details, and a large amount of on-screen "real estate" for viewing multiple applications at one time.


The 27BL55U-B features built-in FreeSync* Technology. FreeSync technology by AMD eliminates the tearing that can occur in videos, games and applications with the highest visual settings, caused by the difference between a graphic card's frame rate and a monitor's refresh rate. FreeSync eliminates tearing and stuttering that can occur because of differences between a graphic card’s frame rate and a monitor’s refresh rate.

The Black Stabilizer allows designers to have better visibility, even in deep-dark scenes or too-light scenes. It lets you have better strategy by enabling you to see if there is an enemy or object waiting to interrupt you in the
darkest area. Plus, there is no more worry when facing a bright area, such as a flash bang attack; the Black Stabilizer effect minimizes visually-compromised areas on the screen during the flash bang.

Screen Split* divides the display into multiple sections for different tasks by resizing the windows on the screen. Its advanced options have expanded to include 4 types of Picture-in-Picture(PIP) Mode among 14 options. With PIP
Mode you can work on the main screen while watching a video in a smaller window floating on the screen.
*Screen Split software runs on Windows Vista/7/8 and Mac OS

OnScreen Control allows you to modify your screen configuration by a few clicks without forcing physical buttons built in monitor. My Display Presets offers customized picture mode for specific software. It has automatically
applied to picture mode you already preset. You don't need to select the picture mode each time.

Specifications / Documentation


  • Screen Size: 27"
  • FlatPanel Type: IPS
  • Color Gamut: (Typ.) sRGB 98% (CIE1931)
  • Color Depth (Number of Colors): 1.07B
  • Pixel Pitch: (mm) 0.1554 x 0.1554 mm
  • Response Time: (GTG) 5ms (GtG at Faster)
  • Refresh Rate: 60Hz
  • Aspect Ratio: 16:9
  • Resolution 3840 x 2160:
  • Brightness 300 cd/m² (Typ.)
  • Contrast Ratio 700:1 (Min.), 1000:1 (Typ.)
  • Viewing Angle 178º(R/L), 178º(U/D)
  • Surface Treatment Anti Glare, 3H


  • HDMI: Yes x 2
  • DisplayPort: Yes x 1
  • Headphone Out: Yes


  • Color Weakness: Yes
  • Adaptive Sync: RADEON FreeSync™
  • Black Stabilizer: Yes
  • Dynamic Action Sync: Yes
  • Flicker Safe: Yes
  • Smart Energy Saving: Yes
  • Reader Mode: Yes
  • Super Resolution +: Yes
  • Color Calibrated: Yes
  • Dual Controller: Yes
  • On Screen Control (OSC): Yes
  • HDR (High Dynamic Range) HDR 10
  • HDR Effect Yes