Eye Protection LED Desk Lamp: Soft and non-flickering design,the YESDEX reading light is friendly to your eyes, helping you avoid eye fatigue caused by flickering light and harsh glare. Great for student and back to school gift 3 Color Modes & 10 Brightness Level: YESDEX Desk lamp with clamp offers 3 light modes, and 10 custom levels of brightness for study, craftwork, or relaxing, reading, working, thinking, relaxing, drawing, knitting, sewing, hobby, handicrafts, etc Flexible Goose-neck & Wide Clip: YESDEX desk lamp has 360° flexible goose-neck allows you to adjust the reading light to any angles you want. Easy to attach it just about everywhere, to save more space. It won't be wobbling when you need direct the light. The foam pad will protect your furniture without scratch. USB Powered & Switch Control: The lamp comes with a USB charging cord, supply the power to the led table lamp through adapters, power banks, computers, etc, no more worry about the distance between the clip lamp and socket. (Adapter is not included.) Other than voice control, you can use the switch button on the cable to control the light. If your product has a manufacturer defective or other concerns. The benefits of using LED desk lamps for lighting 1. Led lighting is a green light source: low working voltage, low power consumption; stable performance, long life, shock resistance, strong resistance to vibration 2.led lighting products can provide a high quality light environment, improve the light efficiency of the lighting system, no infrared and ultraviolet components, high colour rendering and a strong luminous directionality 3. Good dimming performance, no visual error when the colour temperature changes 4. Cold light source with low heat generation, can be safely touched 5. Improves glare, reduces and eliminates light pollution 6. Zero strobe, will not cause eye fatigue phenomenon No electromagnetic radiation, eliminating radiation pollution to protect the brain