Features: Made of Plastic, not easy to damage and enduring. Small and light weight, great for clipping on a book when nighttime reading. 3 color temperature adjustment function, providing three light sources: soft, natural, and cool white. Fully flexible design allows for great viewing angles in any position. It is suitable for reading, learning, night lighting and other scenarios, especially suitable for students, office workers and travelers. Specifications: Component: ABS, PP and stainless steel Battery capacity: 200mAh (502030) Charging time: 1-2 hours Working hours: 3-6 hours Working current: 100mAh Lumen: 40lm Package Includes: 1pc Book Light note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.