HIGH SECURITY: Our combination key box is made of durable aluminum alloy, which is waterproof, corrosion-resistant and weather-resistant. Ideal for outdoor installations. A protective cover protects the combination dial from unpredictable weather conditions. Large capacity and storage space: The capacity of the outer large combination key box is large enough (the inner size is about 11.5 x 8 x 4.3 cm) to accommodate house, office or other large car keys; you can also store small items if needed. , Such as credit card, ID card, etc. Two unlocking modes: This key safe has a 4-digit combination and a spare key; you can use it to define up to 9,999 combinations. You can set your own password and change it regularly to increase security and make it more difficult to crack. A spare key might be more convenient in case you forget the code. Wide Application: This large combination key safe can be widely used in home, garden, office, etc. It will be a great help on any occasion. It allows you