Echomaster MM-4320-DVR - Car 4.3" Factory Mount Monitor with Built In DVREchomaster MM 4320 DVR Car 4. 3" Factory Mount Monitor with Built In DVR Recording your vehicle safety camera footage can give you an extra line of protection if you find yourself involved in a traffic incident. DVR recording creates a record of what really happened, protecting you from unfair liability. This universal replacement rearview mirror comes equipped with a crystal clear 4. 3 high resolution LCD display, transforming part of the mirror into