- Unique aroma diffuser: ultrasonic essential oil diffuser for aromatherapy. Large 360ml water tank, two volcanic atomization effects, and a light that can be switched on and off. Includes 2H and 8H timer options. Safety protection with automatic shut-off when water runs low. - Surprise gift: modern design and practical functionality make this a creative gift suitable for room, office, yoga, and spa settings. - Stress relief and ambience: the volcanic mist and subtle aroma provide visual and olfactory pleasure. Not only a humidifier but also an aromatherapy diffuser. Add a few drops of essential oil to the water for a calming fragrance. - Timer function and operation: timer has 2 settings, 2 hours and 8 hours. When set to ON, the diffuser continues to spray until the water runs out and then automatically shuts off. Light can be turned on or off.