Model Name 50N21
OS LG webOS TV
Chasis RTD2874
Digital TV or ATV Digital   TV
Display Technology DLED
Resolution 3840*2160
Picture  
Back Light   Unit D-LED
Resolution 3840*2160
Panel Brightness (cd/m2) 220-280
Contrast Ratio 1200:1(typ.)
Response Time 8ms(typ.)
Uniformity ＞65%(typ.)
Color gamut 70%NTSC(typ.)
Viewing Angle (H/V) 178°/178°(typ.)
Life Time ＞20,000hrs (min)
Color 1.07B   (8bit+FRC)
Color Temperature Cool/Normal/Warm
Aspect Ratio 16:9/4:3/Origina/   Vertical Zoom/4-way Zoom
Picture Mode  Eco/Standard/Vivid/Cinema/Game/Sport
Energy Saving OFF/MINI/MEDIUM/MAX   /SCREEN OFF
Eye Comfort Mode YES
HDMI UHD Deep Color 4K@60Hz
Noise Reduction Medium/   High/Low/ Auto/ off
SOUND  
Sound out Internal   speaker/ HDMI ARC /Optical/Bluetooth
Internal  Speakers  type Normal   speakers
Internal Speaker Powers 2*10W
Sound mode Cinema/Music/Standard/Clear/Game/Sport
TV Installation Type Stand   / Wall-mounted
Digital Sound out PCM/DOLBY   Digital PLUS/ HEAAC
Auto voice control Yes
Surround Yes
HW INFO.  
Operating   System LG  webOS TV 2.0
CPU A75*2+A55*2
GPU IMG BXE4(700MHz）
Coprocessor 4   core
DDR/Flash DDR   1.5GB / eMMC 8GB
DTV DVB-T/C/T2/S/S2/ISDB-T/ATSC
Audio MPEG1   layer 1/2,MPEG 2 layer 2, Dolby digital, Dolby digital plus. 
Image Processing Technology HDR   / HLG 
Color System PAL/SECAM
Media  Format    MPEG-4, H.264, H.265,VP9，Doiby digital，Dolby digital plus，Dolby MS11, Dolby MS12, MPEG1/2,VC-1,XVID
Air mouse RC OPTION(With magic RCU）
Voice Control OPTION(With magic RCU）
Bluetooth YES
LG Channels YES
Camera USB YES
Multi-screen YES
Apple homekit YES
Apple   airplay YES
Matter IoT   ready YES
Bluetooth   surround YES
WiFi IEEE   802.11 b/g/n/AC  2.4G/5G
Software   features  
ATV PAL/SECAM/NTSC
DTV DVB/ISDB-T/ATSC/DTMB(OPTION)
OSD English,  Spanish, French, Portuguese etc.
Apps Netflix,YouTube，Prime video，Densiy+，AIRPLAY, APPLE HOMEKIT, Browser,LG Store, Media, etc.
Browser Native   browser
Favourite Programs Yes
Programs Searching Yes
Recording Yes
Sleep Timer off/10/20/30/60/90/120/180/240min
Software upgrading USB   / OTA
TERMINALS  
HDMI 3
USB 2
AV in 1*RCA
Earphone 1
PC Audio N/A
RF 2（for DVB-S2) 
Component(Y/Pb/Pr) N/A
VGA N/A
SPDIF OPTICAL*1
SCART N/A
CI Yes (ONLY EU   MARKET)
BASIC   Info.  
Power   Supply AC100-240V~  50/60HZ
Power Consumption-TV on ≤180W
Power Consumption-Standby ≤0.5W
Unpackaged   With Base Stand (mm) 1111*261*701mm
Unpackaged  Without Base   Stand 1111*80*645mm
Packaged Dimension (L*H*W) 1150*105*690mm