[3 adjustable brightness and magnetic base] This light has 3 brightness levels to choose from for comfortable reading. This way you can find your comfortable glow. Perfect little book light for on the go. Removable clips with this reading lamp. They are more convenient than regular clip lights. And with the magnetic base, you can attach it anywhere for lighting. [3 dimmable colors by light] This small book light has 3 color modes: Amber (3000K), Breeze (4500K) and Precise (5500K ). Amber filters 99.9 percent of blue light to protect your eyes. The airy reading mode offers you a comfortable reading world. Pinpoint reading mode highlights the area clearly, allowing you to focus on every detail of your book. [Widely used and USB] Compatible with any USB port on your computer, adapter or USB socket. Suitable for reading at night, perfect for use on planes, trains and cars as well as at home or any other occasion where high quality reading is possible. [Flexible and portable design] The LED Head of the book light can be rotated 90 counterclockwise, 180 clockwise, 45 down, the 350 flexible bracket can be bent to any angle for better viewing. Perfectly meet your lighting direction requirements.