About this product: HIGH SECURITY: Our combination key box is made of sturdy aluminum alloy, waterproof, corrosion and harsh weather. Ideal for external installation. A protective cover protects the combination dial from unpredictable weather conditions. Large and storage: The capacity of the large outdoor code key box is large enough (internal size is about 11.5*8*4.3CM), which can hold house, office or other large car keys; if needed, you can also store some small things, such as credit cards, ID card, etc. Two unlocking modes: This key safe has a 4-digit code and panic button; it allows defining up to 9,999 combinations. You can set your own password and change it regularly for increased security, making it difficult to crack. Emergency key can be more convenient if you forget the password. Wide application: This large key safe with password can be widely used in homes, gardens, offices, etc. It will be a great helper for any occasion. It allows you to keep and secure your car keys while surfing without having to risk hiding them under sand/rocks etc. Easy to install: This outdoor key safe comes with 4 screws and 4 nylon expansion wall anchors to easily secure your car keys. Make sure the combination key box can be mounted to any solid surface. No fuss or extra work at the higher cost of drilling a box into the wall.