Safe and Durable: This 4-digit code safe allows you to set your own combination code with 10,000 unique options, ensuring the safety and security of your keys. It is hermetically sealed. and water resistant, durable enough to hold your house keys and outside keys; EASY TO USE, INSTALL AND USE: This safe offers 2 mounting options. Key combination. You can mount it on the wall with the supplied anchors and screws; Also, you can install it on the peephole; No more afraid of being locked out. Get Out of the House! LARGE CAPACITY: The portable gym key locker offers a large interior space to hold up to 5 house keys [less than 3.35 inches]; When you are traveling or on a business trip, you can store your house keys, car keys or access cards inside; WIDE RANGE OF APPLICATIONS: Using this key box, the 4-digit key allows you or others to access the key at any time, which is perfect for daily activities, friends, family, services. house, emergency entry, pet sitter and real estate matters etc.