3 Dimming LevelsThis reading light has three adjustable brightness levels (low light, medium light, and strong light). You can choose the lighting color and brightness that best suits your reading, which is very suitable for you to read in bed, at night, or in dark places.Power Bank FunctionThe book lamp is equipped with a 5000mAh large capacity rechargeable battery, powered by a Micro USB port. The USB A port output can be used for emergency charging of mobile phones and other devices. Fully charged supports up to 11-40 hours of continuous lighting reading time. (Comes with Micro USB data cable)Eye Protection Design & Flexible PortabilityOur reading light adopts a soft and comfortable lighting design, which can effectively reduce eye fatigue and fatigue after long-term use. The lampshade is made of high transparency acrylic material, which is non glare and does not harm the eyes. The desk lamp adopts a flexible gooseneck design, which can be adjusted to any angle you like. The lamp holder is also foldable, making it easy to carry in a bag or pocket.Wide ApplicationThis rechargeable small lamp is suitable for reading books, weaving, and repairing at night; Can place headboard lighting to assist children's sleep; As a flashlight, it can be used for night running, night fishing, camping - the perfect gift for book lovers