HOMDOX Digital Electronic Security Safe Box with Deadbolt Lock Wall-Anchoring Design for Jewelry Money Cash Valuables (Black) Digital Electronic Security Safe Box Perfect for Jewelry Cash Gun and Valuables. Double Deadbolt Electronic Lock w/Digital Keypad. PIN numbers can be programmed 3 to 8 digits long.The thickness of the box itself is 1mm and the door is 3mm.Size:9.1 x 6.7 x 6.7 inches(L x W x H). Digital entry. Master key included in the even of forgotten or lost codes. Secures to Wall or Floor with Hidden Anchors & Heavy-Duty Bolts,Potentially reduce your Home Insurance Premiums.