Digital Electronic Flat Recessed Wall Hidden Safe Security Box Jewelry Gun Cash (Black) Digital entry. Master key included in the event of forgotten or lost codes. PIN numbers can be programmed 3 to 8 digits long. Hidden lock with two keys Constructed of thick solid steel, 2 Shelves inside safe, Heavy-Duty chrome steel dual 3/4" pin bolt throw system (not just latch) Mounts inside wall. Recessed to keep safe hidden. Felt padding included to protect delicate items. Please see pictures for size specifications