Large and Secure Storage: The wall-mounted key safe measures 13 (L) x 8.5 (W) x 4.7 (H) cm. The interior size is 12 (L) x 8 (W) cm. It's one-third larger than a standard key safe on the market. It can store multiple keys or your spare key, credit cards, cash, car keys, etc. Secure the key safe outside, rather than placing it under a doormat or under a rock. Emergency Key: What should I do if I forget my password for the key safe with a code? Did it break? Please don't! This product avoids these problems. We offer an emergency key! If you forget your password, you can use the emergency key to open the key box and reset the password. (Note: You cannot put the emergency key in the key box!) Reliable and Robust Key Safe: The 4-digit combination code on the outside and inside offers 10,000 possible combinations to ensure robust protection. The original combination is "0-0-0-0." It would be nice to reset the code after receiving it. It features a heavy-duty steel locking mechanism and a zinc alloy cast body to resist attacks from hammering, sawing, or prying. The waterproof and solid construction of the combination lock box is made of high-hardness zinc alloy. It is waterproof and resistant to prying and corrosion. It can well protect internal items. A waterproof cover can help waterproof and protect outdoor privacy. If you have any questions, please contact us first. Reset the Code & Find the Reset Code: If you want to reset the code, open the box and press buttons A to B (as shown in the picture). Scroll the numbers to set the desired combination. Then, setting button B to A is OK. (Note: If you forget the code, open it first with the spare key. Then scroll through the 4 numbers until the "RED COLOR" appears on the back of the key.) Find the correct code.