About This Item: DURABLE MATERIAL - Made of high-quality metal frame and plastic cover with exquisite craftsmanship, which is wear-resistant for long-term usePRIVATE SPACE - Designed with a concealed, easy to use code-lock device. Perfect for hiding cash, collectibles and personal items secretly in plain sight, provide you a private individual spaceEASY TO HIDE - With a realistic dictionary cover look, it naturally blends in with the rest of your library on your bookshelf, makes it virtually impossible to be detectedPORTABLE TO CARRY - Lightweight and compact material, handy and convenient to carry. It can be easily put in your luggage, briefcase and backpack and moreMULTI SIZES - There are 4 sizes for selection, meets your needs. Small-4.5"(L)*2.2"(W)*7.1"(H), Medium-6.1"(L)*2.2"(W)*9.4"(H), Large-10.4"(L)*2.6"(W)*7.9"(H) Product Specification: -Material: Metal construstion+plastic shell -Color: Red/Black/Blue/Brown -Package Include: 1 x Dictionary Book Safe -Features: Durable material, security storage, easy to carry How to Change Password? 1. Begin with the combination at 0-0-0; 2. Open the lock and slide the switch from A to B to set a new combination; 3. Set your new combination and make sure the numbers are centered; 4. Return the switch on the back from B to A.