The Nighthawk Mobile Vault II is a pistol safe designed to hold one pistol/handgun, small documents, wallets and/or jewelry. The safe opens like a clam shell (top flips backwards) so you can easily access your stored items. There is a security cable that mounts to the left side of the unit to easily attach it to a secure surface and two pre-drilled holes on the bottom. The Nighthawk I features a mechanical combination lock. This lock operates with one unique combination that is three single digits.