3 Color Modes Booklight & Eye-Caring: Protect your eyes with our Reading Light's 3 different reading modes: Warm Light(2800K), Natural Light(4500K), and White Light(6000K). Warm Light mode filters 99.9% blue light to reduce eye strain, while the Natural Light mode provides a cozy and comfortable reading experience, The White Light mode highlights every detail of your book. 3 Colors Modes 5 Brightness Levels: This small book light for reading in bed Choose from 5 brightness levels (20%, 40%, 60%, 80%, 100%) to find the perfect lighting for your eyes in any situation. Eye-care soft glow creates a private reading space for you without disturbing others. USB Rechargeable Light: No need for additional cables or batteries - simply plug our rechargeable book light into a computer, power bank, adapter, car charger, or USB outlet for easy charging. With a built-in 500mAh battery, it lasts up to 4-10 hours (depending on brightness setting). Multi-Angle Adjustable & Pocket E Booklight: Our clip-on book light is designed for maximum flexibility, with a base clamp that rotates 170 and an LED lamp head that rotates 90 degrees up and down and 180 degrees left and right. It's lightweight and portable, making it perfect for travel. Professional Eye Protection: The Reading lights for books in bed have 5 LED beads scientifically installed so the light can be evenly distributed on reading pages. book reading light is bright enough to illuminate the full pages, while it is dim enough not to disturb others nearby. No flickering, nor harsh light.