Screen size
Diagonal screen size of the car monitor in inches. The larger the screen, the larger the image on it and the easier it is to view it from a distance. At the same time, large displays require an appropriate amount of space for installation, which can be critical in cramped car interior conditions. And looking at a large screen up close is not always convenient.
For most types of auto monitors (see "Installation"), the diagonal from 7" to 10" is considered optimal. At the same time, ceiling models can significantly exceed this figure,
reaching 15 "and even more. Devices for
installation in a mirror, on the contrary, have small displays of 3-4" (more are not required for them). If the characteristics of the mirror monitor indicate a large screen of 7-10", most often this means a display elongated in width, the image on which is divided into 2-3 parts (for example, for simultaneous broadcasting from different parking cameras).
Resolution
The screen resolution of a self-monitor indicates the number of luminous dots (pixels) that make up the visible image. It is usually written in two numbers, indicating the size in pixels horizontally and vertically. In this case, we can say that the higher this indicator, the clearer and more detailed image the monitor is able to provide. This is especially important for large screens (see "Diagonal"), on which graininess from a low resolution would be especially noticeable. In addition, appropriate displays are also recommended for watching movies in high quality, detailed photos and other similar content — otherwise, all the initial advantages of the “picture” may be negated.