Fill your space with an aromatherapeutic super fine mist by just adding a few drops of your favorite essential oil to the diffuser. The microchip vibrates at ultrasonic speed to turn water and oil into the mist. Helps the home feel like a serene span with LED mood light changes. colors to create a calm ambiance at night. No more harmful fumes from burning candles. Features 1, 2, and 3-hour times and continuous mode. Can run up to 5 hours depending on the mist setting. Turn off automatically when the water level is low. AC plug - No batteries required Essential Oil is not included