Patented design . Electronic key pad locking system . Able to be programmed to personal code . Security lockout for 15 minutes after entering 3 wrong codes . Piano hinge on door . Safely secures firearms, ammo, and other valuables . Electronic keypad operates with 4 AA batteries . Can be mounted inside a closet, drawer, or vehicle . Volt battery backup entry . Constructed of heavy 1.5 mm steel thickness . 1-Year limited warranty . Powder-coated epoxy finish . Overall exterior: 10 in. W x 5.50 in. D x 7.50 in. H . Overall interior: 9.88 in. W x 5.88 in. D x 7.88 in. H