HIGH QUALITY MATERIAL: Made of aluminum alloy, high quality and durable. External dimensions: 11.5 x 9.5 x 4.1 cm. Your key safe comes with a weatherproof sliding lid to protect the combination dial from the elements. WATERPROOF AND SAFE: The metal case is made of solid aluminum alloy, ensuring durability and preventing hammering, sawing or prying attacks. Designed with a black sliding cover to prevent dust, rain, snow and ice Large Capacity: The storage space of the key box has been upgraded, it can hold at least 5 house keys, and can also temporarily store small car keys, documents and other small items Easy to Install: The key box has pre-drilled holes on the back, as well as 4 screws and 4 expansion plugs, so it can be easily installed on walls and any solid surface without any power source. Shared Key Box: The key box with digital code is the perfect solution for sharing keys, store your keys or cards in this key box. Prevent unlocking for single people, school children, the elderly, healthy people in emergency, family caregivers, etc. Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.