3 LIGHTING MODES AND 10 LUMINOSIT LEVELS: The LED clamp lamp is equipped with 3 color temperatures: warm light (3000K), natural light (4500K) and white light (6500K). Each lighting mode has 10 levels of brightness dimming. A total of 30 lighting modes for all your needs. Depending on the intended use, you will always receive the most suitable light color. EYE PROTECTION: The reading light consisted of 54 high quality LEDs and The head bar is covered with a milky white diffuser providing uniform light without glare, flicker, glare. It will not tire the eyes if you stay in the light for a long time. Designed to help readers and workers protect eyesight and reduce eye strain. Great gift for kids and bookworms. 360 GOOSENECK HOSE AND USB POWER SUPPLY (ADAPTER NOT INCLUDED): With the flexible neck, you can easily adjust your clip and direct the light wherever you want. The USB cable can simply be connected to an available USB port (laptop \/ desktop \/ power bank \/ USB adapter) to power the lamp. Please note: only use with 5V \/ 2A adapter, otherwise the control button and reading light will be damaged. MEMORY FUNCTION: The desk lamp can automatically remember the brightness setting of your last use. When switching on again, the last brightness and mode settings are retained. RESPECT FOR THE ENVIRONMENT: As an environmentally friendly LED light, it uses 80% less electricity than conventional bulbs, so you can reduce your carbon footprint and your electricity bill at the same time. All of our products have passed the strict quality test. If your product arrived faulty or damaged, please contact our sales support. We will get back to you as soon as possible.