【USB Rechargeable】Easy charging with built-in USB, directly connect to laptop, power bank, car charger or USB outlet for charging, no extra cables needed. 1.5 hours charging time about 8 hours of use (with brightness adjustment). Don't waste more money on batteries. 【Compact & Lightweight】Mini format design, 37 grams, small and lightweight, perfect for attaching to the book while reading at night; it can be folded completely flat and slim, portable for reading on the plane, train or in the back seat of a car when traveling. 【Flexible Lighting Angle】Fully flexible design, the LED lens can be rotated 90° left and right in horizontal direction and rotated downward by 45°; The 350° flexible holder can be bent to any angle for optimal viewing without having to move the light all the time. 【Adjustable Lighting Modes】Soft white light, 50%, 100% brightness to choose from, allows you to choose the perfect brightness when reading; Enjoy your time reading in bed without disturbing your roommate. It will maintain the brightness you chose before. 【Gift for Kids】Compact size and multi-functions, this book light is a great gift for avid readers kids who love to read anywhere. It can also be used as a bookmark or mini light in case of power outage.