【Multifunctional Book Light】This reading light features three color temperatures (yellow, warm white, and cool white), and five brightness levels. The narrow beam angle is designed to brightly illuminate the book you are reading in bed without disturbing your partner. It is light and thin, and can also be used as a bookmark. 【5 Brightness Adjustable & 3 Color Modes】The book light offers 5 brightness levels to suit your reading needs, ensuring you get the perfect lighting for your eyes. Plus, with 3 color modes, you can choose warm or cool light to match your reading environment. Whether you're reading in bed, on a plane, or in a dimly lit room, this reading light will provide the ideal illumination. 【USB Rechargeable & Timer Design】Our book lights for reading at night features a built-in USB rechargeable battery, allowing easy charging through any USB port. Once fully charged, it can last up to 80 hours of continuous use. Press and hold the brightness button for 3 seconds to set a 30-minute timer, and pressing any button will cancel the timer setting. 【Flexible & Portable Design】The flexible arm of the book lamp allows you to adjust the light to any angle, so you can direct the light exactly where you need it. The compact and lightweight design makes it easy to carry in your bag or pocket, so you can take it with you on the go. Whether you're traveling, camping, or just need a little extra light for your reading, our booklight is the perfect solution. 【Package & Prompt Customer Service】It includes a book light and a user manual. We have a 12-month warranty. If you still have any issues during installation or defective items, please contact our customer service e-mail for a prompt solution, we will get it resolved within 24 hours.