【5 Brightness Adjustable】This little book light has 5 brightness levels available, you can choose the most suitable level for your eyes. This reading light will memorize the previous setting of the brightness for you to enjoy the light simultaneously. There are 5 LED beads scientifically installed so the light can be evenly distributed on reading pages. The light is bright enough to illuminate the full pages, while it is dim enough not to disturb others nearby. No flickering, nor harsh light.