USB Rechargeable Reading Light - Built-in 200mAh lithium rechargeable battery and charged by any universal USB interfacecomputer, power bank , adapter, car charger or USB socket for charging. No cables needed, easy and convenient. A full charge takes 1.5 hours and provides 8 hours of lighting. 3-level brightness clip-on light with ON/OFF/DIMMER switch --25 lumens, 3000K warm white light, white light natural 4300K, cold white light 8000K. Turn on/off the book light and adjust the brightness from 0.1 to 1 by pressing the manual switch. Good for eye protection and creates a private reading space for you without disturbing your roommate. Lightweight and Portable Reading Light - This slim and lightweight children's book light is ideal for cut a book when reading at night; can be completely folded flat and slim, portable put in pocket, suitable for bed reading or travel reading. adults and bookworms can also be used as a bookmark. Perfect LED reading light for paperbacks, magazines, bedtime stories, newspapers, etc. Provide you a better reading experience at night without disturbing your loved one by your side. For most people who like to read books, especially those who are a lot in reading or studying at night, in choosing a portable and practical reading lamp matters a lot. This clip-on reading lamp is just the right choice for you. It's extra lightweight and foldable for easy storage and transport, and it easily attaches to e-readers and books with anti-glare and non-glare white LED for you to read anywhere and anytime. It really is a wonderful LED book light for home and travel use. Reading Light Feature: Very stable, well balanced, not bulky and easy to orient in all directions, Adjust the light intensity which avoids unnecessary eye strain * 25 lumens, One super bright LED, 3000K warm white light, 0.15W power , lifespan of 30000 hours. * Lamp body ON/OFF Touch switch, also with adjustable brightness. *The power light is blue when charging, after charging is complete, the blue light is off, then you can take out the light for use.