[3 adjustable brightnesses and magnetic base] This lamp has 3 brightness levels to choose from for comfortable reading. This way you can find your comfortable glow. Perfect small reading light for traveling. Removable clips with this reading light. They are more practical than normal clip lights. And with the magnetic base, you can stick it anywhere for lighting. [Widely used and USB] Compatible with any USB port on your computer, adapter or USB power outlet . Suitable for night reading, perfect for use on planes, trains and cars, as well as at home or any other occasion where good quality reading can be carried out. [ Flexible and portable design] The LED head of the reading light can be rotated 90 counterclockwise, 180 clockwise, 45 down, 350 flexible bracket bends to any angle for better viewing. Perfectly meets your lighting direction needs.