Constructed of 18 gauge steel. Protective foam-lined interior. Convenient elastic strap with pockets for extra storage. High-strength lock mechanism performs reliably time after time. High-strength steel security cable included. Patented No-Eyes keypad with fingerprint scanner allows for quick access. Holds 120 unique fingerprints. Weighs 7.5 pounds. Dimensions: 12x10.25x3.5 inches. Requires one 9-volt battery.