1.Utilizing non-heat ultrasonic waves which does not compromise the healing and natural properties of the oils. Can also be used without oil as a humidifier.                    
2.Time setting: Press the Middle button until the indication light turns red to set the time 30/60/90/180 mins                                                                              
3.Press the LIGHT button  to shift from  one color to set it on a specific color. Long press the Light button to turn off the light without affecting the mist.