Feature:1. Mini and Compact: Book light is designed with mini size, small and light, suitable for clip on book for night reading; fully folded, flat and thin, convenient for reading while sitting in the back seat of a plane, train or car when traveling.2. Easy Charging: Clip on book light has built in USB, plug directly into a laptop, rechargeable battery, adapter, car charger or USB outlet for charging, no extra cable needed.3. Multi Modes: Clip on book light has three levels of brightness adjustment, 30 percent, 60 percent, 100 percent brightness options; four light colors, yellow light, white light, warm light, natural light. Brightness memory function, it will keep the brightness level you previously selected.4. Adjustable Angle: Book light adopts fully flexible design, the LED lens can be rotated left and right 90 degree and down 45 degree horizontally; 315 degree flexible bracket can be bent to any angle to get the best viewing effect.5. Multipurpose: Clip on book light can also be used as a bookmark or mini flashlight. Perfect LED reading light for pocket books, magazines, bedtime stories, etc. A gift for kids, friends and family.Specification:Item Type: Clip On Book LightMaterial: ABSWeight: Approx. 41g/1.4ozSize: Approx. 105x33mm / 4.13x1.30inBattery: Polymer Lithium Battery 370mAh (included)Light Source: Yellow Light, White Light, Warm Light, Natural Light3 Levels of Brightness.Package List:1 xClip On Book Light Note:Please allow some error in manual measurement.