Vehicle-mounted electronic apparatus

A vehicle-mounted electronic apparatus comprising:

• a holder disposed on a headrest of a vehicle seat;
• a casing connected to the holder, the casing comprising:
• a back surface and a side surface;
• a containing groove formed on the back surface and adjacent to the side surface, and the containing groove having an inner wall surface;
• at least one through hole formed on the inner wall surface;
• and at least one magnet disposed in the casing, adjacent to the containing groove, and exposed from the at least one through hole;
• a remote control contained in the containing groove and having a side wall and at least one magnetic element disposed on the side wall;
• wherein the at least one magnetic element is magnetically attracted by the at least one magnet;
• and two displacement-limiting parts laterally extending from the inner wall surface of the containing groove at two inner corners of the containing groove and configured to block the remote control.