PRODUCT DESCRIPTION Extremely quiet Easy to clean Just add tap water and essential oils Cool steam No heat involved/no risk of burns Automatically shuts off BPA-free Great for home or office Run life of 5000 hours Rotating LED lights Runs up to 7 hours continuously NOW® Solutions new Metal Touch Ultrasonic Diffuser is a sleek and contemporary diffuser that complements almost any décor and makes a healthy alternative to scented candles and aerosol air fresheners. This attractive unit has rotating LED lights, runs up to seven hours continuously, and has a total run life of 5,000 hours.