Product color black lampshade material: plastic voltage: 36V power supply: 3 x AAA batteries (not included) size: approx. 23 * 21 * 1.5 cm Package includes: 1 piece * LED book light The new light structure design, flat screen lighting, precise design angles, the light is only in the reading position, particularly suitable for reading in bed, does not affect the rest of the others, the original light barrier design ensures that r that the again More scientific optical angle design, the wavelength of light is close to natural light that is white is slightly yellowish, the light environment is warmer, suitable for long time reading without eye fatigue; the brightness can be adjusted Lighter overall design, smaller size, easy to flip through, easy to carry around campus, in the park, in the garden and in dark places for reading and studying. Can be used as a bookmark. More energy saving, longer usage time, specially adapted ultra-bright, low-power, low-voltage LED bulbs, low-power consumption. Use only 3 AAA batteries ( 7). Wear-resistant, scratch-resistant, detachable, unique photoelectric switch to prevent the panels from being scratched. Self-developed and improved ultra-thin plexiglass sheet, the country's exclusive molding technology, which effectively prevents deformation the old script prevents, becomes smaller, surface shrinkage, halo, etc.