3 Lighting Modes & 10 Brightness Level: Desk lamps come with ten adjustable brightness levels and three lighting modes, warm, white, and warm white light. With the blue indicator light on the USB control cord, you can easily locate the power button in the dark and freely change the brightness to your preferred level. Eye-Friendly LED Light: With its healthy light source, non-flickering, glare-free design, and lack of UV rays, LED reading lamps successfully preserve our eyesight and lessen eye strain for prolonged work and reading. Energy-Efficient and USB-Powered: With a 75% power consumption reduction over conventional incandescent lights, clip desk lights are an economical way to save money and reduce your electricity bills. A USB charger (power adapter), power bank, or laptop can power a USB desk lamp. Flexible & Adjustable: Constructed from premium aluminum alloy and PC plastic for optimal heat dissipation, these robust clamps include a protective covering that resists scuffs and can be used on a variety of surfaces, including tables and board heads. You may tilt the gooseneck to any angle you like thanks to its 360° flexibility. Applications: The USB multi-function lamp is excellent for illuminating video conferences, studying, tables, bedtime reading lamps, camping lanterns, makeup lamps, manicure lamps, and infant care, among other uses. Selecting professional LED clip lamp is a cost-effective and high-quality illumination option. To improve your illumination experience, you can mount the clip lamp on your work area, desk, shelf, craft table, drawing board, or bedside table.