Wide Application: - This is an external combination key box for storing keys and bank cards etc. It can be installed at home, in the office, in a warehouse, in a vacation home or wherever you need it. You can share spare keys with friends, family, neighbors and caregivers. With this lockable outdoor key safe, you don't have to worry about keys hiding under the carpet. HIGH SECURITY: - Our wall mounted key safe is made of high quality aluminum alloy body and durable steel locking mechanism, which provides extra strength for keys outside the box, preventing hammering or the piercing. The weatherproof metal material protects your keys and cards. Reliable 4-digit combination: - Provides enhanced protection with a 4-digit combination. 4-digit combination safes offer up to 10,000 different combinations, far more than 3-digit models, and are much harder to crack. Easily redefine the desired combination at any time to protect your valuables. (NOTE: Take a picture/write it down to save your code!) Compact and easy to use: - External dimensions (H x W x D): 3.7 x 2.95 x 1.37 inches, Internal Dimensions (H x W x D): 3.2 x 2.75 x 1.1 inches. Equipped with a palm-sized key safe that can store multiple keys