4 colors, 3 lighting modes: (50% warm white, 100% warm white, 50% daylight, 100% daylight, 50% cold light, 100% cold light) to choose. Eye-protecting light creates a private reading space without disturbing others. USB charging: Built-in USB for easy charging, directly plug into a laptop, mobile power, adapter, car charger or USB socket for charging, no additional cables required. 200mA lithium battery, 1.5 hours of charging can last about 8 hours (brightness setting). No more wasting money on batteries. Small and : Mini size design, small and light, suitable for clipping onto books for nighttime reading; fully foldable, flat and thin, easy to read on planes, trains or in back seat of cars. Flexible Lighting Angle: Fully flexible design, LED lens can rotate 90 left and right in horizontal direction and 45 downward; 315 flexible bracket bends to any angle to provide you with best viewing, no need to constantly reposition small book light. Multi-purpose: This desk lamp can also be used as a bookmark or as a mini flashlight during a power outage. Perfect LED reading light for paperbacks, magazines, bedtime stories and more. Great gift for your children, friends and family. Light color: 3 levels of white light/3 levels of warm light/3 levels of white light + warm light, 9 levels in total Battery capacity: 300mAh Charging time: 1-2h Working time: 4-8h Working current: 100mAh Lumen: 40lm Number of lamp beads: 3 white lights + 3 warm lights Colour:Pink Material:ABS+PC Package Contents: 1 * Bookmark Book Lamp 1 * English instruction manual Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.