1.Volcano Shape & Flame Light: Using a unique and cool volcano shape design, and with the ambient flame lighting so that the mist is like a real flame, the whole humidifier is like a burning volcano. It is not only a diffuser, can also be an ornament. Suitable for bedroom, office, home, yoga, gaming, etc. 2.2 Lighting Modes & 3 Lighting Colors: This volcano humidifier has two lights modes(unremitting and dimming) and three lighting color(flame red, ice blue, and no light). Through the combination of smart LED light and ultrasonic vaporizer, it creates a realistic flame effect. Built-in atomization noise reduction mechanism, operating sound does not exceed 35 decibels. 3.400ml And 2/8H Timer: This air diffuser humidifer has a large capacity water tank of 400ml which can spray for a very long time. You can set the timer for 2 or 8 hours, diffusers humidifiers will shut off when the water runs out, no need to worry even when you're sleeping. 4.Noiseless & Waterless Auto Off: You can refill water into the diffusers directly from the top without the need to take off the outside shell, makes it easy to add water. It also makes it easier to clean the difusser/oil. Scent diffusers will stop lighting and working automatically in case of water shortage.