Product color: black Lampshade material: plastic Voltage: 36V Power supply: 3 x AAA batteries (not included) Size: 23 * 21 * 1.5 cm Package includes: 1 piece * LED book light Light structure design, flat screen lighting, precise design angles, the light is only in the reading position, compatible with reading in bed, does not affect the rest of others, original light barrier design Optical angle design, the wavelength of light is close to natural light that is white slightly yellowish, the light environment is warmer, compatible with long time reading without eye fatigue; brightness adjustable Lighter overall design, smaller size, compatible with flipping through, compatible with carrying around campus, in the park, in the garden and in dark places for reading and studying. Can be used as a bookmark. Energy saving, longer usage time, adapted ultra-bright, low-power, low-voltage LED bulbs, low-power consumption. Use only 3 AAA batteries. Wear-resistant, scratch-resistant, detachable, unique photoelectric switch to prevent the panels from being scratched. Self-developed and improved ultra-thin plexiglass sheet, exclusive molding technology, which effectively prevents deformation, size reduction, surface shrinkage, halo, etc.