That Company Called If 5102 Really Tiny Booklight - Pink,ThatcompanycalledIf,5035393051020" /> The really tiny book light clips onto books. It's the slimmest, trimmest, lightest and most fashionable book light you can buy. Curved in all the right places and soft touch coated. Rotates to a full 90 degree angle position. Comes with 3 x AG3 LR41 batteries.