Description: Our essential oil diffuser has a capacity of 400 ml. It can work for 7-18 hours in strong fog mode and 10-12 hours in weak fog, which can spread the aroma vapor to your room. Automatic shutdown without water: You can change the light to your feeling at the moment, a constant color or a rotation of 7 colors, and each light has a bright and mode. When the time is up or there is no water, the cold mist humidifier will automatically shut down, there is no danger of scalding. Reduce allergy symptoms in dry climates in winter: help to improve breathing and sleep, relieve allergies, and reduce electrostatic shock in dry climates. -quiet: You can even mix two or more essential oils to create a unique mixture. A little bit of white noise that you hardly notice, it can help you relax and sleep better, but it's not annoying at all. A great gift idea: In this winter, give the aroma diffuser to your family or friends to express your love for them. Specification: Material: PP polypropylene and ABS Working Power: 12W Capacity: 400ml Noise: