QMKJ 2 Dynamic Trajectory Parking Line AHD 1080P 720P Car Rear Night Version View Reverse Backup Parking Track Camer Universal Suitable for all Android demonstrate displays Does now not require direction box, CANBUS, or OBD interfaces, consists of built-in reverse monitoring module Default CVBS dynamic trajectory, please choose CVBS-NTSC channel at the display screen againCutting the golf green line is AHD 1080P high-definition dynamic trajectory Please choose AHD 1080P-25 channel at the visual display unit againCutting the white line is the AHD 720P high-definition dynamic trajectory Please select the AHD 720P-25 channel on the computer screen again