[Adjustable brightness] Three brightness modes: warm white, natural white and daylight. Long press the brightness switch on the back of the lamp holder to adjust the brightness (0% to 100%) and color temperature of the book lamp. [Flexible design] The LED gooseneck clip can be rotated 360 degrees to meet your needs. Of course, the flicker-free lamp in the reading lamp does not produce lead or mercury, which protects your eyes from light damage. [Wireless charging] The rechargeable LED reading light is charged through the USB port, and can be charged directly to the USB port. The charging time is only 60 minutes, and it can be used for up to 480 minutes after being fully charged. [Easy to carry] The book lamp weighs only 40 grams, so it is very easy to transport. With this lightweight design, the book light can be easily connected to books and magazines, making it a perfect reading companion for travel and trains. [Multifunctional fixture] The reading lamp and clip are detachable, and the book lamp can be used as a bookmark. The bottom of the clamp is magnetic, so you can connect it to any iron.