2 - The positioning of the settings buttons below the screen and of the fact that they are not easily identified (light relief symbol of the same color as the screen) that it is not intuitive to set the screen and it takes it back many times. The result is an easily adjustable screen.
3 - I think the color rendition is dull compared to other flat panel displays
In short, for the price I expected a better quality. My next screen will not be of that mark.