The Petal has a relaxing mist, soft white ambient light, and can cover up to 30.6 square meters. Fill with water up to the red marker and select your customizable mist output of 2 or 6 hours continuous or 12 hours intermittent (5 min. on, 5 min. off). Then add your essential oil/s of choice, and simply enjoy the wide array of essential oil benefits. Automatic shut off when the water level is low. Optional light settings: nightlight or night-free. Simple, 3-piece diffuser is easy and convenient to use.