LEDMO Clip On LED Desk Lamp, Sturdy Gooseneck, Touch-Sensitive Control Pane, 5V 1A USB Charging port Clamp Lamp, White The Best Advantage: Natural light, No radiation No flicker, According to your habits you can adjust the brightness of your favorite by long press the switch. then the lamp will record your previous brightness when you use it in the next time, you don't need to adjust. Lamp can be rotated 360 degrees or up and down adjustment, user-friendly design. It has a built in battery so once it's fully charged you can bring it anywhere you need, sturdy clamp allows great versatility, mount to bedframe, headboard, home office tables, computer desk. The sleek, modern and flexible metal gooseneck provides great natural light right where you want it.Excellent for college and university students who needs small footprint lights for reading and studying. This lamp could be powerd by USB port, While charging the power button turns red and when fully charged it turns blue, 1 year warranty,60 days money back guarantee for quality problem