This paperback sized rechargeable book light is equipped with 3 super bright LED lights along the handle and a 3 level dimming switch allowing the user to adjust to the desired brightness. Lasts 30 hours, rechargeable with the provided USB cable. Ergonomic thumb groove and detachable page clip allows for easy placement on reading material. Protective case included. Weight: 4 oz (0.1 kg), dimensions: 7.25″ x 5.375″ x .875″ (18 x 14 x 22 cm).