Perfect book light with adjustable brightness and color temperature8 LED lights with 3 color temperatures: 3000K, 4500K and 5500KStepless brightness adjustment, up to 50 lumensUSB rechargeable with up to 30 hours of battery lifeThis handy book light has 8 powerful LED lights and offers a perfect solution for reading in different lighting conditions. With three adjustable color temperatures and stepless brightness, you can customize the lighting to your needs. The lamp easily attaches to the book with a clip and is powered by a built-in rechargeable 250 mAh battery, providing up to 30 hours of illumination depending on settings. It is equipped with a convenient memory function that remembers your last light settings.Quick charging and convenient featuresWith a charging time of just 40 minutes, the book light is quickly ready for use again. A red LED indicator shows when the lamp is charging and turns off when fully charged. The lamp also has a quick shut-off function and stepless brightness control that makes it easy to find the perfect brightness.Specification- Brightness: Up to 50 lumens- Color temperature: 3000K, 4500K, 5500K- Battery capacity: 250 mAh- Battery life: 2.5-30 hours depending on brightness- Charging time: About 40 minutes_tfrf