From Pura, this set includes:  One Pura 4™ smart fragrance diffuser, Sea Salt Grapefruit refill, and White Vetiver refill. The Pura 4 smart fragrance diffuser uses innovative smart features paired with premium, clean scents to give you the most modern, customized, and high-end scenting experience possible. Pair with premium fragrances created with ingredients that are safe and clean Together, smart vials and Puralast™ technology deliver a scenting experience of up to 120 hours Adjust fragrance intensity, set schedules and timers, and more in the Pura app Get a consistent scent experience based on the temperature in your home  One Sea Salt Grapefruit vial: Sea salt, black pepper, and ripe grapefruit are balanced by a dew drop accord and tarragon for a fragrance like summer by the sea. Sea Salt Grapefruit scent notes:  Top: sea salt, pink grapefruit, pink ginger, apple, lemon zest, dew drop accord Middle: lily of the valley, black pepper, geranium, clary sage, tarragon Bottom: amber, cedar, vanilla bean One White Vetiver vial: Cashmere, eucalyptus, and lilac entwine with earthy vetiver and sandalwood to form a truly sultry scent. White Vetiver scent notes:  Top: sicilian bergamot, eucalyptus Middle: silky cashmere, muguet, cypress Bottom: white cedar, crisp amber, patchouli, vetiver, nude musk Imported.