3 Lighting modes & 11 Brightness levelsThis usb power lamp provides 3 light modes(warm white, cool white & warm) and 11 level adjustable brightness.You can create the most comfortable and suitable lighting mood for different occasion such as reading, working, studying, and relaxing etc. 360° Flexible illuminating angle & VersatileWith the help of Durable gooseneck arm and 3.35 in Metal Clip,You can adjust the light and clamp to where you need and you need whatever you're doing homework, reading, working or making up.The reading light can be clipped on anywhere you want, saving more space. Eye-caring & Memory function The clip light equipped with 48 LED beads, not only provides users soft, eye-friendly, flicker-free & anti-glare lights, also source consumes up to 85% less energy and lasts 20 times longer than incandescent bulbs. And the clip light always remember the color mode and brightness level last time used(only when it turned off normally last used v