Homdox 220ml Aroma Essential Oil Diffuser Wood Grain Cool Mist Humidifier for Office Home Study Yoga Spa, 7 Color Lights Two Operating Modes:Diffuse for 3 minutes,stop for 1 minutes("P"is blinking when paused) and Continuous("P"is on) 7 Color Changing Lights:Color reference only to how many times you press button"L",If you not press,light color auto change Nice Functions: Humidify air of your living space to prevent dry,Purify the air and improves the quality of the air Safety:Shuts off automatically when the water runs out and works in a low voltage environment, it will not harm you Get To Know Us:We offer replacement or money-back guarantee,The customers satisfaction is the perpetual pursuit of Homdox