[3 colors, 9 brightness levels] The book reading lamp has three colors: white, warm white, warm, and 30%, 60%, and 100% brightness to choose from, so that you can keep your eyes comfortable and enjoy reading in bed without disturbing your roommates. Short press to switch colors, long press to switch brightness. Brightness memory function, which will maintain the brightness level you previously selected. [USB charging] The reading lamp does not need additional cables or batteries. It can be easily charged by using the built-in USB. It can be directly plugged into the computer, power pack, adapter, car charger or USB socket for charging. Charge for 1.5 hours, up to 8 hours (at the brightest setting). [Flexible lighting angle] The reading lamp is completely flexible in design. The LED lens rotates 90 clockwise and 90 clockwise and 45 downward; The 315 flexible support can be bent to any angle for the best view. There is no need to constantly reposition the light. [Small and light] The design of the reading lamp is small, 1.3 ounces, small and light. It is very suitable to be clipped to a book when reading at night. It can be completely folded into a flat and thin shape, which is convenient to read when traveling, knitting, camping and repairing on the back seat of an airplane, train or car. [Multi purpose] The reading lamp can also be used as a bookmark or a mini flashlight when power is off. The perfect LED reading light is suitable for paperback books, magazines, bedtime stories, etc. It is a perfect gift for children, friends and family.