Waterless technology uses filtered air to bring a more natural airflow. 9 Fragrance intensity levels. Up to 30 days of operation at 8 hours per day at middle intensity setting 5. Does NOT mist continuously. Pauses between mist for desired aroma level. Auto off LED display lights turn off after 60 seconds untouched. Ideal for large rooms up to 1000 sqft. Sleek premium aluminum design. Uses SereneScent home fragrance oils (sold separately). Remote control operated.