The product description has 2 different contrast readings, my screen has definitely the low contrast one, the picture is unimpressive but usable for office purposes. Contrast Ratio: 800:1 Vertical Viewing Angle: 178° Built-in Speaker: Yes Brightness: 450cd/m Interface Type: HDMI Contrast Ratio: 1100:1
Great screen. Great resolution and touch is working good. works plug and play on my laptop. The raspberry pi 4 cannot power the screen over USB. Additional power is needed for that.