Thann Peony Electric Aroma DiffuserTastefully creates a serene home atmosphere by dispersing relaxing aroma through 2. 5 million ultrasonic vibrations per second operation while maintaining the unique benefits of the essential oil. With the highest safety features, the diffuser comprises with automatic shut off protection when the water runs out. Hence, it is extremely safe, kid friendly, and suitable for any area. It can be operated in two different modes: 3 hour continuous working