3 lighting modes and 10 brightness levels: The LED clamp lamp is equipped with 3 color temperatures: warm light (3000K), warm white light (4500K) and white light (6500K). Each lighting mode has 10 brightness levels. A total of 30 lighting modes for all your needs. Depending on the destination, you will always get the most suitable light color. PROTECTION PROTECTION: Children's reading light with high-quality 24 LED chips ensures luminous and flicker-free. Book light does not tire the eyes, even when they stay in the light for a long time. Designed to help readers and staff, protect eyesight and reduce eye strain. Flexible GOOSENEC 360 ° system and USB power supply (adapter not included): Thanks to the flexible neck, you can easily position the light with the clip and direct the light where you want it. The USB cable can be easily connected to an available USB port (laptop / desktop / Power Bank / USB adapter) to provide the lamp with electricity. Please note: Only use with 5V / 2A adapter, otherwise operating button and reading lamp. Automatic switch-off (1 minute) and memory function: by pressing the on / off button. for 2 seconds, the blue light will flash and the terminal light will automatically turn off after 1 minute. The desk lamp can remind you last used brightness setting automatically. After switching back on, the last set brightness and the last set mode. Environmentally friendly and handling: As an environmentally friendly LED light, it consumes 80% less energy than conventional incandescent bulbs, so you can reduce CO2 reflection and lower your electricity bills at the same time. All our products have passed rigorous quality tests. If the product is damaged or damaged, please contact our dealer service department. We will contact you immediately.