The main body of each secure key box is made of high-strength aluminum alloy, which is corrosion- and rust-resistant, making it extremely efficient and durable. The high-quality aluminum alloy casing protects the key box from hammering and sawing, protecting your belongings from theft. Our key safe has a large capacity. : 7cm(L) x 2.5cm(W) x 8cm(H) 2.76"(L) x 0.98"(W) x 3.15"(H). Mini size portable key cabinet with large internal space so you can store multiple keys, and you can also store small things as you need. . Secure key cabinet with removable handle. You can hang it exactly where you need it, for indoor and outdoor use, such as door handles, on gates, fences, cars or anywhere else. No installation tools required as you do not need to fix it to the wall, you can remove it at any time just like a normal padlock. . The key safe consists of a 4-digit password, there are 10,000 possibilities. The 4-position combination lock is ten times more secure than the 3-position combination lock, so do not forget your password. You can choose your favorite number from 10,000 different combinations and easily set or reset your password in a few Minutes. The outdoor security key box is small and portable, with a wide range of applications, unlimited, sophisticated, and durable. Suitable for both indoor and outdoor use, it can be applied to rentals (Airbnb), garages, offices, schools, warehouses, etc. It offers a one-year warranty and lifetime customer service. If you are not 100% satisfied with the key box, please feel free to contact us.