Stepless Dimming and 3 Color Modes: Adjust the brightness from 100% to 10% by long press button to suit different reading environment. Simple switch 3 color temperature lighting modes by clicking the button；mixed color (9 LEDs on), cool white (5 cool white LEDs on), warm (4 warm LEDs on). Eye-Protecting Reading Light: No flicker, no shadow, no dizzy light. Provide a natural and soft light which won’t straine your eyes even after long hours of use. Enjoy your reading time without disturbing your partner or roommate. USB C Rechargeable & Long Battery Life: Built-in 1000mAh battery only takes about 2.5 hours to get a full charge and support up to 80 hours lighting at lowest brightness. 4 LED indicator lights will always show the remaining power of the light. [USB universal charging cable included]. 360° Flexible Neck & Sturdy Clip: 360° bendable goose neck can be rotated to any angle you want. Anti-skid clip design makes it firmly clamp on an e-reader, books, shelf, etc. Portable and Widely Use: Lightweight and sturdy book light can stand independently with the anti-slip pad on the bottom. Free your hands to enjoy bedtime reading, working, traveling, camping etc.