... and electric 3. multifunction 4.attractive appearance Name:LED Lamp, Book LampType:LED engery saving lampPower voltage: 4.5(V)power ... :100000(H)Size: 14.5X5X8CMUsage: can be used as a book lamp, desk lamp, reading lamp, etc The head of lamp ... can be adjustable turnover, can be fixed in the desk, book, computer with the clamp. It can use both battery and ...