Large & amp; Secure Storage: The capacity of the large code key box is large enough (interior size approximately 4.5 x 3.7 x 2 inches) to place house, office or other large car keys; And you can also store a few small things if needed, such as credit cards, ID cards etc. Two Unlocking Modes: This code key safe has a 4-digit numeric code Numbers and emergency key; It allows a maximum of 10,000 combinations to be defined. You can set your own passcode and change it periodically to improve security, which makes it difficult to resolve. Emergency keys can be more convenient if you forget the code! Easy to Install: This exterior key safe comes with 4 screws and 4 nylon expanding wall anchors to ensure that the key code box can be mounted on any solid surface. No fuss or need for extra work to have a box drilled in the wall at much more expense. Solid Construction: Our wall key box is made of a tough, durable aluminum alloy to water, corrosion and bad weather. Perfect for mounted outdoors. Large Application: This large outdoor key box can be widely used in home, garden, office etc. It would be a great help for any occasion. It allows you to keep and secure your car key while surfing, instead of risking hiding it in sand / under a rock etc.