[3 lighting modes] (warm white, daylight, cold light) to choose. Eye-protecting light creates a private reading space that does not disturb others. [USB charging] Built-in USB for easy charging, plug directly into a laptop, mobile power, adapter, car charger or USB socket to charge, no additional cables required. 500mA lithium battery, 1.5 hours of charging can last for about 16 hours (brightness setting). No need to waste money on batteries anymore. [Small and light] Mini size design, small and light, suitable for clipping on books when reading at night; fully foldable, flat and thin, easy to read on airplanes, trains or in the back seat of cars. [Flexible lighting angle] Fully flexible design, the LED lens can rotate 90 left and right in the horizontal direction and 45 downward; 315 flexible bracket bends to any angle to provide you with the viewing, without the need to constantly reposition the small book light. Colour:B:Black Material:Plastic Package Contents: 1 * Reading clip book lamp Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.