Flame Humidifier: This diffuser humidifier works is characterized by a unique flame that has three flame colors, blue and purple to generate ubiquitous flame effects. Also, you can adjust the color of the flame at will. Also, you can add 2-6 drops of essential oil to effectively relieve your fatigue and improve air quality. AUTO SHUT OFF: This flame diffuser works with auto shut off, so you don't have to worry about the water box running out. When the water level reaches the warning line, the humidifier's auto shut-off function will activate to ensure the safety of the humidifier. THREE COLORS OF LIGHT: Our flame humidifier is designed with three different colors of flame. You can adjust to your favorite color at will, and it is very exquisite as it is 7 inches long and 4 inches high. Therefore, it is portable and suitable for placing in the office, gym, and giving as a gift to friends and family. Size: 17 x 8 x 11.6cm Color: black, white, green(optional) Package List: 1 x Aroma Diffuser