Three Lighting ModesThis mini USB LED RGB light has three modes. If you choose the solid color fix mode, the color and brightness remain unchanged. If you choose 8-color breathing mode, the color and brightness will change by itself. The last mode is very similar to the solid color fix mode, but it changes the brightness of a color.8 Color Gradients and Memory FunctionWhen you plug in this USB light, it will start in red and change color gradually. Does the color not change on its own Dont worry, click the button and change the color. When the color goes through a cycle and goes back to red, it automatically changes color again. When the color you choose lasts for 10 seconds, it will remember the color, so the next time you turn it on, it will still keep the color.FITS ANY DEVICE WITH A USB PORTWhen you use it in the car, it glows down to illuminate your footwell, so they wont blind you at night. It also works with any powered USB. Any USB port is available.Easy OperationDouble-click to switch the light mode between solid and breathing. In the case of a color change, a tap will turn the light into a single color, and a tap will change the color. After three taps, the light will turn off.Light Sensing and ConsumptionWhen strong light is sensed, it will turn off by itself after 10 seconds. It turns on automatically if its in a dark environment. The output power of the lamp is only 0.1W.