Product parameters: Color white Type of light source LED Power supply and connector type Wired Battery capacity: 1800mA Light source power: 3W Switch: touch switch Working voltage: 5V Color temperature: 4000K ~ 6500K / m Light color: warm white light / white light Brightness adjustment: three-stage dimming Scope of delivery: Reading lamp * 1 Charging cable * 1 Product description: Eye Care Reading Light LED clip light provides comfortable light, no ghosting and no flickering light to protect your eyes from radiant injuries and radiation. Ideal for learning, doing handicrafts, reading or painting. 3 light colors and 3 brightness levels The clamp desk lamp each has 3 adjustable brightness levels to meet our different requirements. For example, a low setting is ideal as a night light without disturbing your bedfellow. while high attitude is suitable for reading or studying. High capacity and rechargeable USB port --- Built-in 1800 mAh lithium battery, longer battery life, no delay in work and study. Clip-on light can work 3-5 hours at 100% brightness. 10-12 hours 60% brightness; 25-28 hours 30% brightness. USB rechargeable reading lamp, plug and play, more convenient. Sturdy Clamp and Flexible Neck --- The sturdy clamp attaches perfectly to bed, music stands, office tables, computer tables, shelves, headboards, drawing boards, etc. With the flexible gooseneck of 360 you can adjust them to any angle. Ideal for children, doing handicrafts, lighting the keyboard, reading at night. Memory function: Press the power button for about 3 seconds to turn off the book light. It saves the last brightness and lighting color of the lamp.