EXTRA LARGE CAPACITY - Large key box with code lock has extra large space (inner size around: 4.3*3*1.6 inches) that you can place multiple keys such as house keys, car keys, security card. More storage than conventional key lock box. You can put your keys or car keys in it when you go to work or on vacation. HIGH SECURITY - Key box with code lock adopts hard aluminum alloy for durability and this metal material is rust-proof, waterproof and corrosion-resistant. High-quality aluminum alloy will protect the box from hammering and sawing. The protective cover protects the combination dials from unpredictable weather conditions. The surface of the outdoor key box is made of environmentally friendly material that is not EASY TO USE - Set the numbers you want as passwords and the 4-digit combination is easy to remember and reset. 4 dials offer you 10,000 combinations at most, which makes it very difficult to break, much safer than the 3-digit lock box. The coded key box will not get stuck