Color: Black Material: Solid steel Operation: Digital pin or override key Original code: 159 then press A or B Overall dimensions: 13.8" x 11.8" x 19.7" Weight: 37 lbs Interior dimensions: 13.5" x 11" x 19.5" Door opening: 12.5" x 17.5" Body thickness: 2 mm solid steel Door thickness: 4 mm solid steel Battery required: 4 x AA-size 1.5 V Time out period: After 3 wrong entries Package includes: 1 x safe box 2 x keys (please do not keep emergency key in the safe) 4 x pieces of 1/4" anchor bolts for mounting 4 x AA-size 1.5 V battery 1 x velvet cushion 1 x instruction manual Caution: Please take out the emergency key and keep it in a safe place. Please read the instruction thoroughly before using the unit. Please keep this manual for future reference.