The operation is very intuitive and easy. Under the Night Light there is the On & Off and the Auto mode. In On mode you have the white "standard light" and can dim it lighter and darker with the round switch (outside) by touch. In the auto mode, the colors change (consistently very pleasant color spectrum) and you can select the desired color by pressing the external switch for a longer period of timeYou can use it to change diapers at night without your little love waking up and reading a book with ease in the eveningNo batteries are required. Everything with an integrated battery. A USB charging cable is includedOrdered as a nursing lamp. You can choose the color and the dimming. Or it changes automatically. Since the colors can be dimmed, the Night Light is ideal for breastfeeding. you also have it as a decorative lamp in the living room. The lamp is worth the money and you would order it again anytimeThese night light is very well suited for a cozy camping adventure. The white light has a pleasant warm color. The colored light changes colors permanently, but can also be stopped with a certain color. The switch under the lamp is very easy to use. Either you switch them to colored or to monochrome. A great lamp for decorative purposes