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 Light Material: ABS Weight: Approx. 41g/1.4oz Size: Approx. 105x33mm / 4.13x1.30in Battery: Polymer Lithium Battery 370mAh (included) Light Source: Yellow Light, White Light, Warm Light, Natural Light 3 Levels of Brightness . Package List: 1 x Clip On Book Light Note: Please allow some error in manual measurement.