Book light is equipped with 9 high quality LED light beads, the light is bright but not harsh, effectively protect your eyes. The head of the reading light can be rotated up and down, left and right by 90°, so that its lighting area can be enlarged by 40%, completely covering 2 pages. Have a brighter and more comfortable experience reading in bed at night! Turn on the book light, long press the power button for 3 s, the green light will come on, and the book light will turn off automatically after 30 min; continue to long press the power button for 3 s, the blue light will come on, and the book light will turn off automatically after 60 min. The unique timed off can let you sleep without worry and save power; it can also remind you that you have been reading for 30 or 60 min, pay attention to rest and relieve eye fatigue.