Most burglars spend less than six minutes inside a victim's home and only have time to check the most obvious places for valuables. Our book safes enable you to hide your valuables in the last place a thief would think to look- in a common book which will blend in on any bookshelf. And to further protect your belongings, the Streetwise Locking Book Safe with Key has a built-in steel box so you can hide and secure your valuables. The inside compartment measures 2 x 5.5 x 9 inches. The SWBSK comes with two keys.