Barska AX11620 Compact Biometric Gun SafeNo combinations to remember or carry a key because your fingerprint is the key that opens the safe door! Up to 30 users. Store anything you want to keep hidden. Pre-drilled holes allow the safe to be mounted into a wall, onto a shelf or counter top. Emergency back-up keys included. Operates on 4 AA batteries Up to 30 users Store anything you want to keep hidden Pre-drilled holes allow the safe to be mounted into a wall, onto a shelf or counter top Emergency back-up keys included Operates on 4 AA batteries