Product material: plastic, reinforced plexiglass, (not included) 3 AA batteries Product voltage: 4.5V, product size: 17cm * 14.3cm * 1.5cm. How to use: Before use, put the battery into the battery slot of the LED flat panel reading light, turn on the switch to the ON position, and you can use it directly. This night light book light adopts a novel structural design. After being turned on with one click, the transparent panel lights up, providing clear and bright light in the reading position without emitting light around. Therefore, there is no need to worry about affecting the rest of others. It is especially suitable for use on beds in school student dormitories or for white-collar business trips. Designed with transparent plastic, the font will not deform during reading, resulting in good usability and clear reading. Soft light, long reading time, less prone to eye fatigue and eye protection. Convenient to carry: It can be carried by plane, train, or car, and can be put into a bag. When in use, it can be opened with one click. This reading light can be a great birthday or Christmas gift for children, as well as a great gift for reading lovers, family, and friends. It is a great gift.