Lemonbest Natural Light 24 LED Simple Desk Lamp Modern Folding Reading Lamp, Toughened Glass Base USB/AC color: white, Material: Zinc alloy Lamp body, Toughened glass base Can be powered by AC Adaptor or USB 110V-220V (Adaptor included) Size: Base diameter: 140mm; Height: 300mm; Tube Length: 275mm With 24 high brightness and energy saving LED beads, 50,000 hours working life. No flickering or flashing, suitable for Bedroom, Home Office, Bedside, Computer side, Office desk, etc.