1、30 Minute Timer Function: Suitable for bedtime reading, the rechargeable book light with a 30 minutes timer function helps save energy, prolong the lamp's lifespan, and ensures you don't stay up too late. 2、Versatile Lighting Modes: Our clip on LED bookmark lamp features 3 lighting modes and 5 brightness levels, allowing you to customize the illumination to suit your preferences, which is practical. 3、Adjustable Design: With a 180 degrees rotation and 45 degrees tilt, the clip on LED reading light can be easily adjusted and precisely positioned for comfortable reading without causing eye strain. 4、Multifunctional: This bookmark reading light can also be used as a photography fill light, phone stand, flashlight, or even a bookmark, providing added convenience and enhancing your reading experience. 5、Long Lasting Battery Life: Offering up to 80 hours of maximum illumination time, the lightweight and portable LED book reading light is the suitable travel companion. It can be conveniently charged using a standard USB cable and is compatible with various power sources, making it versatile and accessible for use anywhere. Item Type: Rechargeable Book Light Material: ABS Battery Type: Polymer Li Battery (Included) Battery Capacity: 500mAh Weight: Approx. 60.00g / 2.12oz 1 x Booklight 1 x English Manual