Very easy installationThe system is powered by connecting to reverse lights for use when vehicle is in reverse status. Or can be powered by directly connecting to a 12V source fuse box/cigarette lighter/power point/ignition switch for continuous use Frared LEDProvide you a better performance in dark space to guarantee safe driving,The 4.3 Mirror monitor easy to hooked on vehicle original rear view mirror with Extendable clips. And this monitor is not bright like normal mirror due to it was added Anti-glare technology on the screen