Armor All ADC2-1004-BLK Rear View Mirror Dash Cam (Black) 720 HD Rear View Mirror Dash Cam records audio and video while you are driving Easy installation requires no tools and attaches to your existing rear view mirror with expandable rubber clips Always records when your car starts and will stop recording when motion is not detected Built-in 2.4" LCD color screen directly on a 12x 3" rear view mirror with microphone and speaker Requires a Micro SD card up to 32gb