Channel your inner Einstein with the Illuminated Bookmark by Kyouei Design. Laying flat to keep your page clearly marked and saved, this incredible device is much more than what meets the eye. The Illuminated Bookmark instantly transforms into a light so you can read day or night. Printed on a special film, the ink used in this bookmark actually transmits electricity. Powered by just one lithium coin battery, the Illuminated Bookmark is transparent and you can see the impressively detailed yet simple circuit printed in detail. A must-have gadget for book lovers and engineers alike, the Illuminated Bookmark sparks the imagination every time it’s used. Designed and innovated in Japan, the Illuminated Bookmark can be used with virtually any book.