Eye-caring Reading Lamp: 8 pieces of mini USB Led light (8 colors); energy-efficient LEDs emit soft lighting, avoiding eye fatigue. | Power Source:It compatibly works with various power devices(5V), like PC computer, smart phone charger and power bank; simply unplug the lamp when it is not in use. | Adjustable:Bend at will, and adjust the lighting angle at will. | Green Materials:Items are made of environmental friendly silicone, plastic and metal; no harmful objects | Portable:Slim and lightweight, easy to carry anywhere.