Secure Storage Key BoxExternal Size (LxWxH)4.7 x 3.7 x 2.4in/12.1 x 9.5 x 6.2cm, Internal Size (LxWxD)3.5 x 3.1 x 1.18in/9 x 8 x 3cm. Enlarged space design, with hooks, can put down multiple keychains, door cards, bank cards, ID cards, cash, etc. It provides ample and secure interior storage space for your valuables, never worry about forgetting your keys or having your keys and cards stolen under the carpet. It also makes it easy for family, friends or home workers to visit your home. Durable Robust MaterialThe key safe box is made of aluminum alloy, solid and durable, thickened protective cover and soft glue box wall provide effective protection, with extra thick removable pull rod, portable and more anti-theft. The key storage box sturdy construction resists attacks from hammering, sawing or prying, keeping your belongings safe and secure. The cover also acts as a weatherproof cover, waterproof and rustproof, to protect the box Internal from wind, rain, snow and dust. 12 Digit Combination PasswordUsing a 1-12 digits password combination, multi-digit password protection. 4-5 digit password or more is recommended, you can reset and change your password at any time, it is recommended that you take a photo or make a note of your new password. The key case comes with pre-drilled holes inside, these are covered by a plastic casing and can be fixed to the wall with screws by simply drilling easily through the plastic casing (screws not included). Easy To Use & Installwith instructions, Rotate the switch counterclockwise to lock, and use a flat-blade screwdriver (not included), rotate the arrow to align with the number according to the code you want. After locking, press your password in any order, and turn the switch to open the key box. Press the wrong password , press "C" to reset. After setting the password, hang the detachable lock of the key safe on the doorknob, fence, railing, etc. to use it. Wide ApplicationWaterproof resettable key lock case ideal for indoor and outdoor use, Effectively protect your keys, cards, jewelry and more. For easy access or emergencies, your friends, family and neighbors can get spare keys from the Key Box when you are away. Especially suitable for decoration, cleaning services, holiday homes, house rental, emergency medical treatment and Airbnb, convenient for collective ownership and rental.