3 Color Temperatures & Seamless Dimming: Select from white / neutral / warm light variations and modify brightness from 0% with press and hold dimming feature, creating customized lighting for reading, studying or relaxing with this versatile desk lamp USB Rechargeable & Long Lasting Power: Includes integrated rechargeable battery offering hours of cord usage, easily powered via USB cable using portable chargers / computers / adapters for continuous lighting without expendable batteries Portable & Lightweight Design: This thin reading light features a lightweight acrylic body (185×25.5×200Mm) that easily attaches to book pages and fits in bags Versatile Usage: Beyond being a reading lamp, this multi purpose acrylic light serves as night light, study companion or gentle accent lighting Comfortable Caring Light: The premium acrylic panel provides consistent, evenly distributed lighting that minimizes eye strain during extended reading while maintaining quiet functionality that won ' t disturb others