AmazonBasics Security Safe - 0.5-Cubic Feet 0.5-cubic-foot security safe with electronic lock and 2 emergency override keys Steel construction with carpeted floor to protect against scratches and damage; Safe is not fireproof or waterproof 2 live-door bolts and pry-resistant concealed hinges; adjustable/removable interior shelf Reprogrammable digital access; uses four AA batteries (not included) Four bolts included to mount safe to wall, floor, or shelf Exterior measures 13.8 by 9.8 by 9.8 inches (L x W x H); Interior space measures 13.5 x 8.75 x 9.5 inches (L x W x H) and door is approximately 2 inches thick