ESUMIC USB Desk Lamp with Anti-glare Light, Flexible Bendable Metal Gooseneck and Desk Clamp and Little Switch Plugs into PC or Power's USB Port to Light up Its Keyboard or Screen. Energy Saving LED Light and No Batteries Needed. Multi-functional LED Light Task Light and Reading Light (Yellow Light) Black USB power supply, no battery required Long service life,which can save you much money Desk clamp, which can be fixed on wherever you want Anti-glare LED reading light and protect eyes Flexible gooseneck allows light to be directed anywhere you needed