USB Lamp 6 Bright LED Adjustable Neck USB Powered, plug and play, no external power need Perfect for laptop or PC USB LampBrighten ... , twist to any position, perfect for laptop & computer3. USB powered, Plug and play, no external power needed4. Gental ... :Type: USB Light/USB LampMaterial: Plastic light head, metal adjustable flexible neckLight bulb: 6pcs high bright LEDSWorking volt: DC 5V USB Lamp