Free Keys, Super ConvenientYou no longer need to bring keys! No need to prepare a key branch for each family member or hide keys under the doormat. A password for your whole family. Also a perfect solution for storing AirBnB rental keys. High Quality MaterialThe Mini Safe is made of sturdy zinc alloy and aluminum alloy, will not rust, have afraid of hammering, sawing, banging and rain. Built-in and impact resistant access cover is waterproof for hammering, sawing or prying eyes. Flexible & Installation-Free DesignThe key box comes with a detachable wire rope to hang the key box there where you need it, like a door handle or a car. Steel cables are softer and longer than metal shackles and are suitable for cabinets with wider spacing. Besides, You can remove the metal cable and use it as a normal key box. 4-Digit Passwords 4-digit passwords provide 10,000 password combinations different, You can set any number as password combination. Please note that the original password is 0-0-0-0, after resetting, it is better to take a photo and save it, otherwise it will not be able to open. < p>Wide Range of ApplicationsInterior dimensions: 7.5 x 9.4 x 3.5 cm. Can be installed outdoors or indoors, such as gates, cabinets, schools, garages, warehouses, emergency entrances, etc. It effectively solves the problem of carrying too many keys or losing keys easily.