Stepless Dimming & 3 Color Modes: Adjust brightness from 100% to 10% by long pressing the button to suit different reading environments. Easily switch between 3 color temperatures by clicking the button: mixed color (9 LEDs on), cool white (5 cool white LEDs on), warm (4 warm LEDs on). Eye-Caring Reading Light: No flicker, no shadow, no dazzling light. Provides natural and soft light that won't strain your eyes even after long hours of use. Enjoy your reading time without disturbing your partner or roommate. 1000mAh Rechargeable Battery: Built-in 1000mAh battery only takes about 2.5 hours to fully charge and supports up to 60 hours of lighting at the lowest brightness. 4 LED indicator lights always show the remaining power of the lamp. [USB universal charging cable included] 360 Flexible Neck & Sturdy Clip: 360 bendable gooseneck can be rotated to any angle you want. Non-slip clip design makes it firmly attached to an e-reader, books, shelf, etc. Portable & Wide Use: Lightweight and sturdy book light can stand independently with the non-slip pad on the bottom. Free your hands to enjoy bedtime reading, work, travel, camping, etc.