Book Wired B/W -- Set your worries on the shelf with a Book hidden camera. Nestled in the pages of this under cover book lies the answers to all your questions. The camera is located on the spine of the book so book must sit upright as on a shelf. Book measures 9.5" x 6.5" x 1.75".The book hidden camera is powered by a 12 hour rechargeable battery pack, no wires or cords to plug in.