Features: 1. 500ml water tank, humidifies and refreshes indoor air, working time up to 10 hours. 2. 7 colors, can change LED color, provide soft mood lighting, very suitable for relaxing or used as a night light. 3. Set the timer (60min / 120min / 180min / continuous light). 4. It switches off automatically when the time runs out or when the water runs out. 5. Speak softly, you can fall asleep comfortably when the aroma diffuser is on. -Press "MIST" button for one second, you will hear "DI" tone, then select stable / off timer between 60min / 120min / 180min / continuous light. Press the "Atomization" button. You will hear the sound of "didi". So you can choose between continuous fog and intermittent fog. Light Control: -Press the "LIGHT" button to turn on the LED light, the default is the light gradient mode, press the button again to correct the light color.