Model No : : HIDIYIN HDY550DID (ORIGINAL LG PANEL ) 
Features
LCD Technology : LG a-Si TFT-LCD
Active Screen Diagonal : 55" (1397 mm)
Pixel Pitch(WxH)  :0.53025x0.53025mm
Panel Dimension(WxHxD) :1210.5mmx681.2mm×54.3mm
Bezel Width  : 0.44mm
Aspect Ratio :16:9 
Physical Resolution :1920*1080
Backight System :LED 
Luminance(nits) :500cd/㎡ 
Contrast :3500:1 (typ.)
Viewing Angle :H 178°|V 178° 
Dynamic CR :500,000:1 
White balance difference of less than 300 degrees K  
Brightness local uniformity of more than 90 percent across 25 (5x5) areas of each display screen
Color System Support: PAL/NTSC/SECAM
Control Type :IR Remote & Software Control