【Large and Safe Storage Space】The external key box measures 13 (L) x 8.5 (D) x 4.7 (H) cm, while the internal dimension is 12 (L) x 8 (D) cm, which is one-third larger than standard key boxes on the market. It can store multiple keys or a spare key, credit cards, cash, car keys, etc. A key box is safer than leaving your key under the doormat or a stone. 【Emergency Key】What should I do if I forget the password of the key box? Don't break into it, we provide you with an emergency key! If you forget the password, you can use the emergency key to open the wall-mounted key box and reset it. (Note: Emergency key cannot be put into the key box!) 【More Reliable and Sturdy】The outdoor key box uses a 4-digit multi-combination code, which offers 10,000 possible combinations to ensure reliable protection. The initial combination is "0-0-0-0", so it would be helpful to be able to reset the code. Sturdy steel locking mechanism and cast zinc alloy body can withstand hammering, sawing or lifting.