Adjustable Eye-caring LED Table Light Portable Desk Lamp (4W, Touch Control, 3 lighting Modes, USB Port, Grey) Eye-Friendly:Covered by PC diffusion cover and powered by direct current,this desk lamp emit emits even, flicker-free and non-glare lighting.soft on your eyes and no eye fatigue. 3 lighting levels for reading/relaxing/sleeping: 3000K warm light, 6500K cool light, 5000K nature light. Energy-Saving:High brightness and long service life, save money and lower your power bill. Well-Designed:Fashion appearance,fitting for any place, your office, bedroom, study,etc.180adjustable spindlemeeting different lighting needs. USB cable for powering.Unique function to be powered by power bank anywhere even when no electricity is available.