External dimensions (H x W x D): 12.4 * 8.3 * 4.15 cm; Interior dimensions (H x W x D): 9.2 * 7.5 * 2.6 cm. The U-shaped hook measures 5.2 cm in height and 4.1 cm in width. The key box comes with a large internal space that can hold up to 5 keys or 3 large keys. You can also store cards, readers, etc. Your key safe has a weatherproof sliding flap cover and a waterproof rubber sleeve to protect the combination dials dust, rain, snow and ice. Place keys with confidence in our 4-digit combination key box. Resettable 4-digit combination for keyless convenience and you can set and reset your custom password, allowing 10,000 options of custom combination codes. Secure and share spare keys to loved ones and family when you are at work or on a vocation. After resetting the password, it is better to take a photo to save otherwise no method to open it if you miss the password. Easy installation (mounting kit included). Metal construction for durability. It can be fixed to the wall with the supplied screws or hung like a padlock. Suitable for outdoors, homes, offices, schools, gymnasiums, factories, construction sites, etc. Portable key safe with removable handle allows you to Easily hang anywhere including doorknob, fence, railing, pipe without screwing or drilling. With all mounting hardware included and pre-drilled holes, you can also modify the wall mounting of the keyed security box or attach it to any indoor or outdoor solid surface as needed.