[Yellow Light & Daylight] - This children's book light has 2 light modes to choose from: 4000K white light and 1550K yellow light. It can block 99.94% blue light and is good for eye protection. Switch modes by pressing the touch button on the lamp head. [Brightness Dimmable] - The reading light is 25 lumens, the brightness can be adjusted from 100% to 50%. [USB Rechargeable] - The clip-on light can be charged via any universal USB interface, simple and convenient. [Flexible Lighting Head] - The LED head of the book light can be rotated 90° counterclockwise, 180° clockwise, and rotated 45° downward to perfectly meet your lighting direction needs. [Cute Design] - New design, multiple color options, an ideal gift for children, adults and bookworms. < /p> Built-in 200mAh lithium battery and universal USB interface, simple and convenient. Simply plug the book light into a USB port, computer, power bank or other USB devices. The LED head of the book light can rotate 90° counterclockwise, 180° clockwise, counterclockwise, downward 45° and rotate 350°. Perfect for your lighting direction needs. Read at night with this book light to keep your eyes comfortable and enjoy reading in bed without disturbing your roommate. The book light can block 99.94% blue light, good for eye protection, especially for children. It is small and foldable, easy to attach to a book, suitable for children to read.