[3 Adjustable Brightness] This light has 3 brightness levels to choose from for comfortable reading. This way you can find your comfortable brightness.,Perfect book light for travel.[3 Dimmable Light Colors]This little book light has 3 color modes: amber (3000K), breeze (4500K) and precise (5500K). Amber filters 99.9% of blue light to protect your eyes. reading mode brings you a comfortable reading world. Spot Reading mode clearly highlights the area so you can focus on every detail of your book.[Widely used and USB] Compatible with any computer USB port, adapter or USB power socket. Suitable for night time reading, perfect for use on planes, trains and cars, as well as at home or anywhere else you can get a good quality reading.[Flexible and Portable Design] The LED book light head can be rotated 90 counterclockwise, 180 clockwise, 45 down, 350 flexible stand bends to any angle for better visualization. Perfectly meet your lighting direction needs.[Perfect Gift After-sales Guarantee]: This ideal gift for children, adults and bookworms can also be used as a bookmark. Perfect LED reading lamp for paperback books, magazines, bedtime stories, newspapers, etc.