Diosmio 2.2 Cub Fireproof Waterproof Safe Box. Safe Box With 4 Security Protection. This safe box is made of superior steel, which comes with a fireproof bag, 3 solid bolts, built-in anti-theft alarm system, and a thickened pry-proof door to provide quadruple security protection for your valuables. In order to avoid being unable to open the safe box via password and backup keys because you forgot the password or dead batteries, please DO NOT put the backup keys of the safe box in the safe.