This versatile light is an excellent nighttime light source for use in the bathroom, nursery, kitchen, hallway and any other location in the home where an AC outlet is available. A standard 5V adapter is now included. This light can also be used on any device with a USB port. This efficient 12-LED light features a unique 3-level touch switch allowing the user to easily adjust the brightness. Perfect when used in tandem with one of our blue light screen filters to illuminate a computer keyboard. Great for travelers with its compact size and ability to lay flat. This product may be used worldwide.