Barska Compact Biometric Safe: the smaller dimensions of the safe mean that it can be kept in little spaces out of reach of everyone but still accessible to the owner. No combinations to remember or carry a key because your fingerprint is the key that opens the safe door! Up to 30 users. Two solid steel motorized locking bolts. Pre-drilled holes allow the safe to be mounted into the floor, on a shelf or counter top. Includes protective fllor mat ensuring items are not scratched, set of emergency back up keys and mounting hardware. Takes 4-AA batteries (included).