This scentilizer aromatherapy diffuser product carries an ultrasonic device. Through a ceramic resonator, the product utilizes ultrasonic vibrations in a frequency of 2.40 MHz to turn water into mist which is then gracefully dispersed into the air. The mist emitting from the product hydrates the surrounding area and your skin as if there is a small waterfall nearby. You can add a few drops of essential oil to the water and fragrance the mist in the air to keep you relaxed and in a good mood. This product is made of Polypropylene. Add water to water tank and essential oil as per instructions (5-10 drops) based on the strength of fragrance you desire. Humidifies and scents the air through ultrasonic vibrations, recommended space up to 150 sq ft. Continuous atomization time up to 6 hours with automatic turn off, 110v, on/off button. Heat-Free Diffuser/Delivery method. Use ONLY with Essential Oil.