USB RechargeableEasy charging with built-in USB, connect directly to laptop, power bank, car charger or USB socket for charging, no additional cables required. 1.5 hours Charging time approx. 8 hours (with brightness adjustment). No more wasting money on batteries. Compact and LightweightMini format design, 37 grams, small and light, ideal for clipping on the book while reading at night it can be folded completely flat and slim, portable for reading on the plane, train or in the back seat of a car when traveling. Flexible Lighting AngleFully flexible design, the LED lens can rotate 90 to the left and right in horizontal direction and swiveled downwards by 45 The 350 flexible holder can be bent to any angle for optimal viewing without having to constantly reposition the light. Adjustable lighting modesSoft white light, 50 percent , brightness to choose from , allows you to choose the perfect brightness when reading Enjoy your time reading in bed without disturbing your roommate. It will remain the brightness level you chose before. Gift for ChildrenCompact size and multi-functions, this book light is a good gift for avid readers children who love to read anywhere. It can also be used as a bookmark or mini flashlight in case of power outage.