About this item The LED desk lamp light source uses high-quality LED lamps (CE ROHS certified) 3 lighting modes and infinite dimming: cool white / warm white / natural white ----- with its 3 color temperatures and 10 levels, our clip-on LED lamps cover all possible uses, whether you are relaxing, sleeping, reading, cooking or working. You can adjust the brightness from 80 to 800 lumens (10% to 100%) in any light mode. With USB power cable: You can connect the clip-on desk lamp to a USB port, DC socket (5V, 2A output), power bank or laptop, etc. If you use them with a power bank, you can take this practical clip-on lamp with you. Unique clamp design: The reading lamp is made of high-quality aluminum alloy with anti-rust treatment, solid and durable. Strong clamping force, can be fixed on any 6 cm thick panel, such as a desk, a headboard, etc. Unique architectural design. Flexible metal arm: flexible metal gooseneck (17.2 inches), the flexible metal neck can be rotated, so that the lighting angle can be adjusted at will no matter where it is placed. Eye protection: The lamps can be adjusted to get the best lighting angle. The lamp holder is made of aluminum, which has good heat dissipation, uniform light efficiency, no glare, flicker and glare. Eyes will not get tired even after prolonged exposure to light. Protect your eyes when reading, drawing, working, studying.